223 fully free open-source tools with no paid tier, curated: Headroom, Crew, AfterShip/email-verifier. Every entry lists license, pricing, and links.
Headroom— tool, 2026-09-08 Open-source context-compression proxy for AI agents (Rust core; Python/TypeScript SDKs): sits between your agent and the LLM and compresses tool outputs, logs, JSON, code and RAG chunks with format-specific, reversible compressors before the model sees them — no changes to agent code.
Crew— tool, 2026-09-07 Open-source coordination layer that lets parallel coding-agent sessions (Claude Code, Codex, opencode) share live context, exchange messages and split work without branching.
aiogram— tool, 2026-09-03 ~5800 stars; complements python-telegram-bot, Telethon; Official Bot API framework (FSM, middleware, magic filters). Auth via bot token. No ToS risk. Complementary alt to python-telegram-bot.
airtable.js— tool, 2026-09-03 ~2223 stars; complements pyairtable; VENDOR (Airtable) official JavaScript client for the Airtable REST API (PAT/OAuth). ToS-clean and authoritative for Node/browser.
ALwrity— tool, 2026-09-03 Full-stack content OS w/ GSC SEO; solo-maintained
Anomalib— tool, 2026-09-03 ~6024 stars; via ossinsight.io
Apache SeaTunnel— tool, 2026-09-03 OSS alt to Fivetran/Airbyte; ~9543 stars; via ossinsight.io
Apache Unomi— tool, 2026-09-03 Genuine OSI CDP; ASF-governed; heavy Java
AppFlowy— tool, 2026-09-03 OSS alt to Notion; ~75102 stars; AGPL copyleft; via ossinsight.io
Astro— tool, 2026-09-03 GATE PASS; modern content framework
Async PRAW— tool, 2026-09-03 ~154 stars; complements PRAW, redditwarp; aiohttp-based async twin of PRAW; same OAuth2 sanctioned Reddit API and rate-limit compliance. ToS-clean official approach for asyncio workloads.
Atomic CRM— tool, 2026-09-03 OSS alt to Attio; ~1192 stars; via openalternative.co
atproto (python-sdk)— tool, 2026-09-03 ~654 stars; complements skyware-js/bot, mattn/bsky; App-password / OAuth session against the open AT Protocol (XRPC), auto-generated from official lexicons; sync+async. Open protocol — no ToS/ban risk; PDS-agnostic. De-facto Python SDK for Bluesky.
Bento— tool, 2026-09-03 OSS alt to closed stream processors; the fully-open Benthos; ~2100 stars; complements Benthos/redpanda-data-connect (upstream), Trigger.dev, SeaTunnel (XREF); MIT. Community fork of Benthos, created after the original (now redpanda-data/connect) moved to a restrictive source-available license -> Bento is the OSI-open continuation. Config-driven stream pipelines using official service creds. No per-platform ToS flag.
Bifrost— tool, 2026-09-03 OSS alt to LiteLLM; ~7151 stars; via ossinsight.io
Billion Mail— tool, 2026-09-03 OSS alt to Mailchimp; ~15393 stars; via openalternative.co
bolt-python (Slack Bolt)— tool, 2026-09-03 ~1300 stars; complements python-slack-sdk; Official Slack Bolt framework (Events API, Socket Mode, slash commands). Auth via bot/app tokens + OAuth. No ToS risk.
BrightBean Studio— tool, 2026-09-03 Unified inbox+sentiment; influencer discovery has NO OSS
browser-use web-ui— tool, 2026-09-03 Web GUI to run browser-use agents; ~16k stars; complements browser-use
bsky (mattn)— tool, 2026-09-03 ~454 stars; complements atproto (python-sdk), skyware-js/bot; Go CLI over the open AT Protocol using app-password auth. Substituted for the ambiguous 'bsky-cli' name (several exist); this is the most-adopted active CLI. Open protocol — no ban/ToS risk.
BusinessDirectory— tool, 2026-09-03 Modern Next.js; no monetization/claim; citation-mgmt has NO OSS
caldav (python-caldav)— tool, 2026-09-03 ~411 stars; complements vdirsyncer, khal; Open-protocol CalDAV client (works with Nextcloud, iCloud, Google via CalDAV). Auth via basic/app-password/OAuth per server. Open standard — no ToS/ban risk. Dual GPL-3.0/Apache-2.0.
CAMEL— tool, 2026-09-03 OSS alt to CrewAI; ~17562 stars; via ossinsight.io
cdp-use— tool, 2026-09-03 Pure Chrome DevTools Protocol, type-safe in Python; browser-automation primitive; ~308 stars
CLI-Anything— tool, 2026-09-03 Framework and registry for making existing software agent-native through structured CLIs; seven-phase harness generator, CLI-Hub package manager, JSON output, tests, SKILL.md generation, and maintained harnesses for creative, productivity, engineering, GIS, media, and developer applications; ~47.6k stars; generated CLIs execute the permissions of their wrapped software — review before agent use
CocoIndex— tool, 2026-09-03 OSS alt to Pipedream; ~11205 stars; via openalternative.co
Cognee— tool, 2026-09-03 OSS alt to LlamaIndex; ~29874 stars; via ossinsight.io
Composio— tool, 2026-09-03 OSS alt to Zapier-for-agents, proprietary tool platforms; ~29600 stars; complements ACI.dev, Nango, Pipedream, MCP servers; Root LICENSE is MIT (some managed-server subdirectories carry Elastic-2.0). Handles OAuth/managed-auth to 250+ apps and exposes them as agent tools/MCP; uses each app's official credentials -> ethical_risk empty. Cloud offering is separate.
Coneshare— tool, 2026-09-03 Dataroom overlay; early-stage; digital-sales-room reading has NO OSS
cua (Computer-Use Agents)— tool, 2026-09-03 OSS alt to proprietary computer-use sandboxes; ~21100 stars; complements macOS-use (XREF), self-operating-computer, Open Interpreter; MIT. NOT the same as XREF macOS-use: this is the broader trycua/cua project (Computer/Lume/Lumier + cross-OS agent fleets & benchmarks) with sandboxed VMs. Sandboxing is the intended safety boundary for computer-use. No per-platform ToS flag.
discord.py— tool, 2026-09-03 ~16100 stars; complements serenity; Official Discord bot API wrapper. Auth via bot token. No ToS risk for bots (self-botting user accounts IS banned - don't). Proper rate limiting built in.; via ossinsight.io, GitHub cross-ref
discourse_api— tool, 2026-09-03 ~304 stars; complements pydiscourse (Python client); Official Discourse (discourse org) Ruby client for the sanctioned API. Auth via admin API key. No ToS/ban risk.
Dittofeed— tool, 2026-09-03 OSS alt to Customer.io; ~2888 stars; via openalternative.co
dlt— tool, 2026-09-03 Pure OSI Python EL library; schema inference
DVC— tool, 2026-09-03 OSS alt to proprietary MLOps asset stores; ~15800 stars; complements git-lfs, ComfyUI workflow files; Closest fit for versioning large generated assets/models alongside Git. Branch is otherwise thin — no purpose-built gen-asset versioning product exists. No model.
Freescout— tool, 2026-09-03 OSS alt to Zendesk; ~4465 stars; via openalternative.co
gcalcli— tool, 2026-09-03 ~3800 stars; complements google-api-python-client (official-api); CLI over the sanctioned Google Calendar API. Auth via Google OAuth (own client credentials). No ToS risk.
gh (GitHub CLI)— tool, 2026-09-03 ~45800 stars; complements PyGithub, octokit.js; Official GitHub CLI. Auth via OAuth device flow or PAT. No ToS risk; standard REST rate limits (5000/hr authenticated).
glab (GitLab CLI)— tool, 2026-09-03 ~4200 stars; complements python-gitlab; Official GitLab CLI (now under gitlab-org). Auth via PAT/OAuth. No ToS risk. Repo lives on GitLab, not GitHub.
gmailctl— tool, 2026-09-03 ~2200 stars; complements google-api-python-client; Uses official Gmail API to sync filters. Auth via OAuth2. Diff-before-apply. No ToS risk.
GoAccess— tool, 2026-09-03 OSS alt to Google Analytics; ~20763 stars; via ossinsight.io
google-api-python-client (Docs/Drive)— tool, 2026-09-03 ~8900 stars; complements gmailctl; Official Google API client (maintenance mode but supported). Gmail API auth via OAuth2. No ToS risk; per-user API quotas.
Google Workspace CLI— tool, 2026-09-03 Official one-command CLI for Drive/Gmail/Calendar/Docs; Rust; ~30k stars; scriptable Workspace automation
googlemaps (google-maps-services-python)— tool, 2026-09-03 ~5000 stars; complements google-maps-scraper (unofficial fallback); Official Google Maps Platform Python client (Geocoding, Places, Directions, Distance Matrix). Auth via API key. Sanctioned; no ToS risk; billed per request.
Gorse— tool, 2026-09-03 Only ready-to-deploy engine; REST API + dashboard
Gradio— tool, 2026-09-03 ~43314 stars; ML-focused; BI fit is secondary; via ossinsight.io
GrapesJS— tool, 2026-09-03 GATE PASS; framework not finished product
gspread— tool, 2026-09-03 ~7492 stars; complements google-api-python-client; Ergonomic wrapper over the official Google Sheets API (OAuth2 / service account). ToS-clean; the go-to Python Sheets client. Subject to Sheets API per-minute read/write quotas.; via GitHub cross-ref, ossinsight.io
Hermes Agent— tool, 2026-09-03 Nous Research self-improving agent; persistent memory + autonomous skill creation; multi-LLM-provider; ~228k stars (anomalously high — verify hype); CAVEAT: autonomous skill-creation = arbitrary code execution by design — sandbox before use
Higress— tool, 2026-09-03 ~9048 stars; via ossinsight.io
himalaya— tool, 2026-09-03 ~7000 stars; complements imap_tools, isync/mbsync; Open protocols (IMAP/SMTP/JMAP) plus Gmail REST and Graph backends. Auth: password/OAuth2/XOAUTH2. No ToS risk.
imap_tools— tool, 2026-09-03 ~836 stars; complements himalaya; Open IMAP protocol (over imaplib). Auth via credentials/app-password/OAuth. No ToS risk.
Inspect AI— tool, 2026-09-03 UK AISI; rigorous eval (verified)
jira-cli— tool, 2026-09-03 ~5900 stars; complements pycontribs/jira, go-jira; Uses official Jira REST API. Auth via API token (Cloud) or PAT (Server/DC). No ToS risk.
jira (pycontribs)— tool, 2026-09-03 ~2100 stars; complements jira-cli, go-jira; De-facto Python Jira library (Cloud + Server/DC). Auth via API token/basic/OAuth. Official API; no ToS risk.
JupyterLab— tool, 2026-09-03 Standard notebook host; use v4
KeystoneJS— tool, 2026-09-03 OSS alt to Contentful; ~9938 stars; via openalternative.co
khal— tool, 2026-09-03 ~3000 stars; complements caldav, vdirsyncer; Standards-based terminal calendar; syncs to CalDAV servers via vdirsyncer. Open protocol — no ToS/ban risk.
Lowcoder— tool, 2026-09-03 Retool-clone successor; NocoDB reclassified SA
mail-parser (SpamScope)— tool, 2026-09-03 ~452 stars; complements email-reply-parser; Pure parsing library (no network/auth). RFC-compliant, Outlook .msg support, defect detection. No ToS risk.
Mastodon.py— tool, 2026-09-03 ~957 stars; complements toot; OAuth2 app tokens against the documented, open Mastodon REST API (open protocol / ActivityPub). No ToS/ban risk — self-hostable, per-instance rate limits. Feature-complete through Mastodon 4.5.
matplotlib— tool, 2026-09-03 Custom license — flag for strict scanners
matrix-nio— tool, 2026-09-03 ~705 stars; complements mautrix-python; Open Matrix client-server protocol with E2EE. Auth via access token/password. Open federated standard; no ToS risk.
mautrix-python— tool, 2026-09-03 ~251 stars; complements matrix-nio; Matrix framework powering the mautrix bridges (and maubot). Open protocol; appservice auth via registration token. No ToS risk on Matrix side (individual bridges to WhatsApp/Telegram carry those platforms' ToS).
MCP Inspector— tool, 2026-09-03 ~10621 stars; via ossinsight.io
MCPJungle— tool, 2026-09-03 OSS alt to proprietary MCP gateways; ~1200 stars; complements MetaMCP, lasso mcp-gateway; MPL-2.0 (weak copyleft). Self-hosted registry+gateway: register servers once, expose one endpoint to Claude/Cursor/Codex/agents with access control. Auth delegated to registered servers. No per-platform ToS flag.
MetaMCP— tool, 2026-09-03 OSS alt to proprietary MCP gateways; MCP Context Forge (XREF); ~2600 stars; complements MCPJungle, lasso mcp-gateway, Klavis; MIT (successor to metatool-app). Groups MCP servers into namespaces, exposes unified SSE/HTTP/OpenAPI endpoints with middlewares + API-key/OIDC auth, Docker-packaged. It fronts other servers; auth is delegated to them. No per-platform ToS flag.
modelcontextprotocol/servers— tool, 2026-09-03 OSS alt to proprietary agent-tool plugins; ~89000 stars; complements Klavis, awesome-mcp-servers, MCP Context Forge (XREF); Reference servers under MIT, transitioning to Apache-2.0 (new contributions Apache-2.0; unrelicensed MIT contributions stay MIT) -> OSI-open either way. Each server uses the target service's official auth. No per-platform ToS flag.
msgraph-sdk-python (Microsoft Graph)— tool, 2026-09-03 ~624 stars; complements python-o365, exchangelib; Official Microsoft Graph v1.0 Python SDK. Auth via MSAL OAuth2 (app/delegated). No ToS risk.
notesmd-cli (Obsidian CLI Community)— tool, 2026-09-03 ~1568 stars; complements obsidian-git; Go CLI acting on LOCAL Obsidian vault markdown files (plus obsidian:// URIs) — no platform account, no ToS/ban risk (local files). Active; formerly named obsidian-cli. Finalist for local-KB automation.
notion-sdk-js— tool, 2026-09-03 ~5649 stars; complements notion-sdk-py, ultimate-notion; VENDOR (makenotion) official JavaScript/TypeScript SDK for the Notion API (integration token / OAuth). ToS-clean and authoritative for Node projects.
notion-sdk-py— tool, 2026-09-03 ~2174 stars; complements notion-sdk-js, ultimate-notion; Sync+async Python client mirroring the OFFICIAL Notion API (integration token / OAuth). ToS-clean; the de-facto Python SDK. Standard Notion API rate limit ~3 req/s per integration.; via GitHub cross-ref, ossinsight.io
Observable Plot— tool, 2026-09-03 Concise grammar-of-graphics on D3
octokit.js— tool, 2026-09-03 ~7800 stars; complements gh CLI, PyGithub; Official GitHub JS SDK (Node/Deno/Browser). Auth via token/OAuth/App. No ToS risk.
Office365-REST-Python-Client— tool, 2026-09-03 ~1716 stars; complements msgraph-sdk-python; Python client for SharePoint REST + Microsoft Graph (OAuth2 / app registration, client-cert or secret). ToS-clean; the most complete community Python option for SharePoint/OneDrive/M365 file ops.
Ollama— tool, 2026-09-03 Easiest local runtime; don't expose port publicly
One API— tool, 2026-09-03 OSS alt to LiteLLM; ~36267 stars; via ossinsight.io
Open Interpreter— tool, 2026-09-03 OSS alt to ChatGPT Code Interpreter (local); ~67900 stars; complements cua, self-operating-computer, PyAutoGUI; Apache-2.0. LLM writes+runs code locally to operate the machine (incl. computer-use / OS control). Executes arbitrary code -> sandbox or require confirmation; not a per-platform ToS risk but a local-security risk.
OpenAlternative— tool, 2026-09-03 Only deployable alt-finder app; +CC0 data list
OpenCheck— tool, 2026-09-03 KYB tool over registry DATA; no contact emails
OpenFlow— tool, 2026-09-03 Only lead-capture-specific OSS; young; rest collapse into covered form/page builders
osmnx— tool, 2026-09-03 ~5800 stars; complements python-overpy (raw Overpass), yelpapi; Open-data OSM tooling over the public Overpass/Nominatim APIs. Open protocol/open data (ODbL) — no ToS/ban risk; respect Overpass usage policy.
Payload CMS— tool, 2026-09-03 OSS alt to Contentful/Strapi; ~44044 stars; via ossinsight.io
pgvector— tool, 2026-09-03 Cleanest profile; no telemetry/CVEs; Postgres extension
Plotly.py— tool, 2026-09-03 Interactive notebook viz; ties to Dash
pyairtable— tool, 2026-09-03 ~892 stars; complements airtable.js; Python client for the OFFICIAL Airtable REST API (personal access token / OAuth). ToS-clean; de-facto Python SDK. Airtable API rate limit ~5 req/s per base.
Pydantic AI— tool, 2026-09-03 OSS alt to LangGraph; ~19148 stars; via ossinsight.io
PyGithub— tool, 2026-09-03 ~7800 stars; complements gh CLI, octokit.js; Official-API client. Auth via PAT/OAuth/GitHub App. LGPL-3.0 copyleft (weak). No ToS risk; REST rate limits apply.
PyOD— tool, 2026-09-03 ~9953 stars; via ossinsight.io
python-amazon-sp-api— tool, 2026-09-03 ~671 stars; complements amzn/selling-partner-api-models (official OpenAPI models); De-facto Python client for the sanctioned Amazon SP-API. Auth via LWA OAuth + AWS IAM/role. No ToS risk (official API); respect SP-API usage plans/rate limits.
python-asana— tool, 2026-09-03 ~335 stars; complements py-trello, clickupython, monday-sdk-js; Official Asana SDK (300+ endpoints). Auth via PAT/OAuth. No ToS risk.
python-gitlab— tool, 2026-09-03 ~2500 stars; complements glab CLI; Official-API Python client, bundles a CLI. Auth via PAT/OAuth. LGPL-3.0. No ToS risk.
python-o365— tool, 2026-09-03 ~1900 stars; complements msgraph-sdk-python, exchangelib; Ergonomic wrapper over Microsoft Graph. Auth via OAuth2. No ToS risk; friendlier than raw Graph SDK.
python-slack-sdk— tool, 2026-09-03 ~4000 stars; complements bolt-python; Official Slack SDK (Web API, Socket Mode, SCIM, audit logs). Auth via tokens/OAuth. No ToS risk. Lower-level than Bolt.
python-telegram-bot— tool, 2026-09-03 ~29400 stars; complements Telethon, aiogram; De-facto standard on official Telegram Bot API. Auth via bot token. No ToS risk (sanctioned Bot API). LGPL-3.0.; via ossinsight.io, GitHub cross-ref
pythreads— tool, 2026-09-03 ~72 stars; complements threads-py, threads-api; OAuth2 against Meta's SANCTIONED Threads API (Graph-style) — covers all published endpoints. ToS-clean official approach; the correct modern replacement for the dead reverse-engineered libs. Requires a Meta developer app.
quizco— tool, 2026-09-03 Only real OSS quiz builder; education-positioned not lead-gen
Ray— tool, 2026-09-03 OSS alt to proprietary GPU-orchestration platforms; ~43500 stars; complements Celery, SkyPilot; General distributed-compute engine; also serves the cost/GPU/model orchestration branch. No model.
Recommenders— tool, 2026-09-03 LF-governed best-practices toolkit; not turnkey service
Refferq— tool, 2026-09-03 Most permissive; payout automation
Relaticle— tool, 2026-09-03 OSS alt to Attio; ~1494 stars; via openalternative.co
Robot Framework— tool, 2026-09-03 OSS alt to UiPath Studio, Blue Prism; ~11800 stars; complements rpaframework (Robocorp), TagUI, Selenium/Playwright; Apache-2.0. Mature de-facto OSS RPA/test framework; deterministic keyword-driven (not LLM). No auth model of its own; inherits credentials of the libraries it drives. No per-platform ToS flag.
rpaframework (Robocorp)— tool, 2026-09-03 OSS alt to UiPath, Automation Anywhere activity packs; ~1500 stars; complements Robot Framework, TagUI; Apache-2.0. Battery of RPA libraries (Browser, Excel, PDF, Email, Windows, cloud) for Robot Framework + plain Python. Deterministic. Credentials handled by each library; no per-platform ToS flag.
ScrapeGraphAI— tool, 2026-09-03 OSS alt to Diffbot; ~29238 stars; via opensource.builders
Scrapy— tool, 2026-09-03 Mature; Zyte-backed; no built-in JS render
Sendune— tool, 2026-09-03 OSS alt to Resend; ~2182 stars; via openalternative.co
SEOnaut— tool, 2026-09-03 Web-app dashboard; forkable to SaaS
serenity— tool, 2026-09-03 ~5600 stars; complements discord.py; Official Discord API in Rust (sharding, cache, gateway). Auth via bot token. No ToS risk for bots.
Shopify CLI— tool, 2026-09-03 ~729 stars; complements shopify_python_api (official-api); Official Shopify CLI. OAuth login via Partners account. Sanctioned tooling; no ToS risk.
shopify_python_api— tool, 2026-09-03 ~1400 stars; complements Shopify CLI (cli); Official Shopify SDK. Auth via API key / OAuth access token. Sanctioned API, no ToS risk; respect Admin API rate limits (leaky-bucket).
signal-cli— tool, 2026-09-03 ~4800 stars; complements signald; Unofficial CLI built on official libsignal-client; registers/links a real Signal account. Widely relied-upon de-facto standard for server notifications -> finalist despite unofficial. platform-tos flagged (unsanctioned client; number could be limited). Auth via phone registration/link.
Silex— tool, 2026-09-03 GATE PASS-with-copyleft-caveat; clean HTML export
SiteOne Crawler— tool, 2026-09-03 Rust; CI gates; backlink slice has NO OSS (data moat)
SkyPilot— tool, 2026-09-03 OSS alt to proprietary GPU-cost platforms; ~10500 stars; complements Ray; Provisions cheapest GPUs across clouds with spot/failover — the strongest OSS fit for the cost/GPU branch (STRUCTURAL: most cost-optimization is commercial). No model.
social-post— tool, 2026-09-03 Multi-platform; hard dep on MuAPI vendor
spaCy— tool, 2026-09-03 Production NLP; Explosion-maintained
StackStorm— tool, 2026-09-03 Rules+workflow engine; heavy infra
Stanza— tool, 2026-09-03 SOTA neural accuracy; 60+ languages
stripe-cli— tool, 2026-09-03 ~2100 stars; complements stripe-python (official-api); Official Stripe CLI. Auth via API key/OAuth device login. Read/config + webhook testing; never automate money movement without human approval.
stripe-python— tool, 2026-09-03 ~2000 stars; complements stripe-cli (cli); Official Stripe SDK. Auth via secret API key. READ/CONFIG ONLY for this atlas: never automate money movement (charges/refunds/transfers/payouts) without explicit human approval. Use restricted keys and test mode.
STUMPY— tool, 2026-09-03 ~4140 stars; via ossinsight.io
Temporal— tool, 2026-09-03 Industry-standard durable execution; heavy ops
Tiledesk— tool, 2026-09-03 Live chat + LLM bot builder + human handoff
Timeplus Proton— tool, 2026-09-03 OSS alt to Materialize; ~2238 stars; via openalternative.co
toot— tool, 2026-09-03 ~1323 stars; complements Mastodon.py; OAuth2 login against open Mastodon API; CLI + TUI. Open protocol — no ban/ToS risk. GPL-3.0 copyleft (matters if embedding/redistributing, not for CLI use).
trackthenews— tool, 2026-09-03 Media monitoring; PR distribution/journalist-DB has NO OSS
tweepy— tool, 2026-09-03 ~11178 stars; complements twikit, twscrape, snscrape; OAuth 1.0a / OAuth 2.0 + API key/bearer token against sanctioned X API v2. ToS-compliant; subject to paid API tiers and per-tier rate limits. No ban risk when used with an authorized developer app.; via GitHub cross-ref, ossinsight.io
workflow-use— tool, 2026-09-03 'RPA 2.0' — record + replay deterministic browser workflows on top of browser-use; ~4k stars; AGPL network-copyleft (SaaS caution)
WritingTools— tool, 2026-09-03 Local rewrite/tone; no detector-evasion framing
X Algorithm— tool, 2026-09-03 Official source for the X For You recommendation stack: candidate retrieval, engagement prediction, diversity-aware ranking, content/account labeling, visibility filtering, ads blending, and supporting Rust/JAX services; ~31.4k stars; valuable reference implementation but not a standalone deployable social platform and some anti-abuse rules are intentionally withheld
ToolHive Registry Catalog— tool, 2026-09-03 Open-source registry catalog of MCP servers from Stacklok. Demonstrates twin catalog streams — servers for executable components and skills for reusable prompt workflows — with an allowedTools array that bounds which tools a skill may invoke.
Model Context Protocol Registry— tool, 2026-09-03 Community-driven registry service for Model Context Protocol servers. Provides a stateless REST read API (v0.1) with cursor pagination and updated_since delta sync, plus the server.json entry schema that standardizes tool distribution metadata.
Cold Outbound Skills— tool, 2026-09-03 Thirty open-source Claude Code skills covering the cold-email motion end to end — lead sourcing, copywriting, deliverability/infrastructure setup and campaign operations — packaged by growth operator Eric Nowoslawski.
Firecrawl anydoc— tool, 2026-09-03 Open-source document-to-Markdown converter from the Firecrawl team (Rust with multi-language bindings): Word, PowerPoint, Excel, OpenDocument, RTF, EPUB, CSV and PDF into clean GitHub-Flavoured Markdown — an ingest layer for agent and RAG pipelines.
HydraDB— tool, 2026-09-02 Open-source distributed graph database in Rust built on object storage — decouples storage from compute so data nodes and indexers scale independently. Neo4j-compatible via Bolt 5.x, with an HTTP query API supporting OpenCypher and GraphBLAS traversal. An infra / agent-memory / context layer.
zg (zvec-grep)— tool, 2026-09-02 A local-first search tool for people and AI agents that combines ripgrep, BM25, and on-device vector search across code, docs, and data — indexing and search stay on the machine. Auto-configures agents (Claude Code, Codex, OpenCode) and reports fewer tool-calls/tokens on SWE-QA-Bench.
OpenBot— tool, 2026-09-02 Gives each AI agent its own isolated computer (browser, file workspace, tools) behind a policy gateway that reviews and audit-logs every action before it runs. Works with AG-UI agents (LangGraph, Mastra, CrewAI, Pydantic AI); model-agnostic and self-hostable.
UI-TARS Desktop / Agent TARS— tool, 2026-09-02 An open multimodal GUI-automation agent stack that controls a computer via a vision-language model — clicking, typing, and reading the screen locally — with a CLI and Web UI, browser control, and MCP-tool integration. From ByteDance.
FreeToken— tool, 2026-09-01 Edge-native Mixture-of-Experts inference engine (UC Berkeley) that runs frontier open-weight models on consumer hardware — e.g. a 35B model on an 8GB GPU — by treating GPU/CPU/host-memory as one bandwidth-adaptive platform; 2–4× faster than Ollama on MoE. Desktop app + Python CLI.
SIE (Superlinked Inference Engine)— tool, 2026-09-01 Self-hosted, OpenAI-compatible inference server that runs 85–100+ open models behind one API (encode/score/extract/generate), loading and LRU-evicting models by traffic so one GPU serves a rotating set instead of one server per model. Plugs into Qdrant, Weaviate, Chroma, LanceDB, LangChain, LlamaIndex.
Obscura— tool, 2026-08-31 Open-source headless browser for AI agents and web scraping, built in Rust: runs V8 JavaScript, speaks Chrome DevTools Protocol, drop-in for Puppeteer/Playwright, ~30MB, with stealth/anti-fingerprinting and MCP support — no Chromium.
URL Intelligence Agent— tool, 2026-08-31 An evidence-first enrichment agent that turns a public URL into structured, sourced intelligence: entity resolution, contact/team extraction, tech-stack detection, brand assets, SEO/security signals, and relationship graphs — with confidence scores and provenance. Runs as CLI, HTTP API, MCP server, or self-hosted service.
OpenExecutive— tool, 2026-08-31 A self-hostable virtual executive advisory board: one executive voice backed by eight specialist agents (strategy, finance, HR, legal, ops, marketing, product, board comms), with RAG over your own company docs, episodic memory across sessions, and a follow-up scheduler. Ships Slack/email/Telegram/Discord/web/CLI.
daily-briefing— tool, 2026-08-29 Open-source AI news-briefing agent that runs entirely on GitHub Actions with no server: Groq for the model + Tavily for web search + email delivery. A reference pattern for owned, near-zero-cost GTM automation.
Itsuki— tool, 2026-08-29 Open-source memory engine for AI agents over REST API + MCP: captures conversations/events into typed, versioned, reversible objects (facts, entities, relationships, events) accessible across 26+ tools, with an audit trail and JSON export.
Tokensift— tool, 2026-08-29 Open-source, tokenizer-level static linter for LLM prompts and payloads — flags token waste (UUIDs, repeated blocks, pretty-printed JSON, base64 blobs) with fix suggestions. Library + CLI, 20 built-in rules; exact counts for OpenAI, calibrated estimates for Claude.
advertools— tool, 2026-08-25 Python productivity toolkit for online marketing: SEO crawling, SERP analysis, keyword/SEM tools, robots.txt & sitemap parsing, log-file and search-marketing analysis.
Chrome DevTools MCP— tool, 2026-08-25 MCP server that lets an agent inspect and control a live Chrome browser — performance traces, network requests, console errors, rendered pages, and screenshots.
Docling— tool, 2026-08-25 Document-processing toolkit with advanced PDF/DOCX/PPTX/XLSX understanding (tables, complex layouts) and generative-AI integrations — for when simple PDF-to-text loses structure.
GeoLift— tool, 2026-08-25 Meta's geo-experiment framework (Synthetic Control Methods) for estimating the true incremental lift of ad campaigns when platform-reported conversions aren't enough.
Google Ads API Python Client— tool, 2026-08-25 Google's official Python client for the Google Ads API — build reporting, budget monitoring, anomaly detection, and controlled account-management (write-capable; gate mutations behind approval).
Google Analytics MCP Server— tool, 2026-08-25 The official Google Analytics team's MCP server: run GA4 core/funnel/realtime reports and property queries through the Analytics read scope — one of the safer direct marketing-data connections.
Google Agent Skills— tool, 2026-08-25 Google's official collection of Agent Skills across infrastructure, databases, AI/ML, security, and developer tools (incl. Google Ads/Analytics developer workflows). Installable via `npx skills add google/skills`. Broad, not marketing-only.
GPT Researcher— tool, 2026-08-25 Autonomous research agent that produces cited, multi-source reports from web and local documents — useful for market, competitor, and category research and content briefs. MCP integration included.
Marketing Skills— tool, 2026-08-25 A collection of AI-agent skills for marketing tasks — CRO, copywriting, SEO, paid ads, analytics, launches, pricing, and lifecycle/growth marketing.
MarkItDown— tool, 2026-08-25 Microsoft utility that converts PDFs, Word, PowerPoint, Excel, HTML, images and more into clean Markdown for LLM pipelines — structure-preserving.
Meridian— tool, 2026-08-25 Google's media-mix-modeling (MMM) framework for measuring channel contribution and modeling budget allocation — privacy-safe marketing science, not ad-copy generation.
Playwright MCP— tool, 2026-08-25 Microsoft MCP server that lets agents automate a browser via structured accessibility snapshots (not screenshots) — for rendered-page checks, forms, funnels, and landing-page QA.
PyMC-Marketing— tool, 2026-08-25 Bayesian marketing toolbox in PyMC: media-mix modeling (MMM), customer lifetime value (CLV), and buy-till-you-die (BTYD) retention models.
Robyn (MMM)— tool, 2026-08-25 Meta's experimental marketing-mix-modeling package — models diminishing returns, response curves, and budget allocation across channels using ML.
TikTok Business API SDK— tool, 2026-08-25 TikTok's official SDK (Java/Python/JS) for its Business API — auth, campaign creation, reporting, and Business Center workflows. Apply the same test-account + approval rules to mutations.
Milvus for DeepSeek Harness— tool, 2026-08-25 A read-only DeepSeek Harness plugin that lets an agent inspect and query Milvus / Zilliz Cloud vector stores — entity lookup, scalar queries, BM25 full-text, and dense+BM25 hybrid retrieval. The plugin bounds the tool surface (no insert/delete/admin) at the execution boundary, not by prompt.
oc (only-cli)— tool, 2026-08-25 Open-source CLI that fetches a web page and returns a compact numbered view instead of raw HTML — a cheap web-read layer for scraping/enrichment agents. Installs as a CLI and as an agent skill (npx skills add).
Quartermaster (QM)— tool, 2026-08-25 An open, multiplayer agent harness for organizations: every employee and Slack room gets a scoped workspace (separate memory, files, permissions, sandbox), with shared skills, admin-gated promotion, crons/background watches, and one-command deploy to Fly/AWS. Model-agnostic (Claude/Codex/OpenCode).