posterly alternatives: 2 open-source picks
posterly costs $15/mo — $180 a year. These 2 alternatives replace it for $0, led by Postiz and Mixpost. All 2 are open source. License, stars and last commit checked by hand on 2026-08-29. No trials, no crippled tiers.
Open-source social media management and scheduling platform with agentic posting workflows.
licenseAGPL-3.0
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Self-hosted social media scheduling and publishing (Laravel). Queue posts to multiple networks without per-seat pricing.
licenseMIT
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
What each one is, in full: Postiz · Mixpost
last updated 2026-08-29 · no votes, no pay-to-list · just what's real
the usual suspects · recommended everywhere, rejected here
BrightBean StudioMCP, API and broad publishing, minus the voice-learning writer that makes Posterly Posterly.
PostizAgent-friendly publishing with AI helpers, but no convincing learn-my-voice system.
TryPostMCP, API and a brand profile are real, but AI needs your model account and coverage stops around twelve networks.
how to choose a posterly alternative
Easiest to get running
Mixpost — a one-click install, no server to maintain.
Most proven
Postiz, with 35,758 GitHub stars — the largest community of the 2, which usually means more answers when something breaks.
what you give up by leaving posterly
- 18 maintained platform integrations, including approval-gated ones (Instagram, LinkedIn, TikTok, Facebook, Google Business Profile)
- a voice model trained on your actual post history and what performed well, not a static prompt template
- Google Business Profile review replies and photo management
- client approval portal and content-plan review for agencies managing multiple brands
- per-platform video/image transcoding tuned to each network's limits
- a hosted MCP server + REST API built for agents, not bolted on after the fact
None of the picks above covers all of it. The full verdict says which gaps matter.
posterly alternatives at a glance
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Postiz | AGPL-3.0 | docker to self-host | self-hosted, web | 35,758 | 2026-09 |
| Mixpost | MIT | one-click install | self-hosted, web | 3,697 | 2026-03 |
why people still pay for posterly
Anyone can wire an LLM to a caption box; keeping a voice model current against real engagement data, holding pre-approved OAuth apps for the platforms that gate access behind business verification, and exposing a stable MCP/API surface an agent can drive reliably are all ongoing work, not a one-time build. Agencies additionally pay for the client-review layer, which needs its own auth and approval state machine. If none of that applies to you, any pick above saves $180 a year.
questions about switching from posterly
Is there an open-source alternative to posterly?
Yes: Postiz, Mixpost. Every tool on this page is open source: no trials, no crippled tiers.
Can open source really replace posterly?
Our verdict is YES. Postiz (36k stars), Mixpost (4k stars) are mature open-source replacements for posterly — self-host with docker and stop paying $15/mo. The full verdict, and what you give up by switching, is at caniopensourceit.online/posterly.
What is the easiest open-source posterly alternative to set up?
Mixpost — a one-click install, no server to maintain.
What is the most popular open-source posterly alternative?
By GitHub stars, Postiz (35,758). Mixpost is next with 3,697.
