The best open-source Marketing Ops tools, curated: 15 in the registry, including ResourceSpace, GeoLift, Quiver GTM. Every tool is open-source; each entry lists license, self-hostability, and links.
ResourceSpace· tool, 2026-09-28 Self-hosted, open-source Digital Asset Management (DAM) for organisations: manage photos, videos, illustrations and audio at scale. Originated to solve real needs at Oxfam; built by a 100% employee-owned, ISO 27001-certified B Corporation. BSD-3-Clause-style license with trademark restrictions; the GitHub repo mirrors the primary Subversion host.
GeoLift· tool, 2026-09-28 Meta's open-source geo-experiment framework (MIT) that uses Synthetic Control Methods to measure the true incremental lift of ad campaigns when platform-reported conversions aren't enough — geo lift testing that designs geo tests and estimates the causal effect. An R package from facebookincubator.
Quiver GTM· tool, 2026-09-26 Quiver GTM is a developer marketing command center with draft/review/live content states, version control, a Content API and MCP access. Open source: yes (MIT self-hosted edition); also offered as a hosted product. 22 stars, but the OSS repo is stale (last push 2026-07-20). Pricing on its Product Hunt launch is undisclosed.
Lyzr launches Opencontroller, a hosted control plane to discover and govern an agent fleet· news, 2026-09-24 Opencontroller by Lyzr is a hosted, unified control plane to discover and govern a fleet of agents, with evaluation, real-time monitoring and request-level policy, deployable into your own cluster. It launched 2026-09-24 on Product Hunt. Despite 'Open' in the name, there is no OSS repository — it is a proprietary hosted product and carries no open-source license.
Usertour· tool, 2026-09-13 Open-source in-app product tours, checklists and surveys for product teams — a self-hostable alternative to Userflow and Appcues. Ships an MCP server so AI assistants (Claude Code, Cursor) can generate onboarding flows directly in your project. Dual-licensed: MIT community code plus a separate enterprise license.
Apache Unomi· tool, 2026-09-03 Genuine OSI CDP; ASF-governed; heavy Java
AtroCore· tool, 2026-09-03 Most-maintained GPL; DAM one module
Vikunja· tool, 2026-09-03 Lightest; Calendar+CalDAV for editorial
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).
GrowthBook· tool, 2026-08-25 Open-source feature flags, A/B experimentation, and product analytics across 11 warehouse sources — prove whether an LLM-generated variation actually performs better.
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.
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.
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.