3 open-source alternatives to Buffer, curated: Postiz, OpenPost, Mixpost. Each is open-source; compare license and links below.
| Tool | What it is | License | Open source |
|---|---|---|---|
| Postiz | Postiz schedules, automates, and analyzes social posts across 14+ channels with AI-assisted content — AGPL-3.0, self-hostable alternative to Buffer. | AGPL-3.0 | yes |
| OpenPost | OpenPost is an open-source, self-hostable social scheduling + content-creation platform — an AGPL-3.0 alternative to Buffer, CapCut and Canva. | AGPL-3.0 | yes |
| Mixpost | OSS alt to Buffer; ~3496 stars; via openalternative.co | MIT | yes |