Roundups
Best Open-Source Social Media Schedulers
Open-source schedulers give you control over data, costs, and customization. The trade-off is hosting and maintenance. Here is how Catpix, Postiz, Mixpost, and TryPost compare.
Short version: Catpix is the free hosted option; Postiz and TryPost are broader open-source suites; Mixpost is a one-time self-hosted license.
Quick verdict
Choose Catpix for free hosted scheduling. Choose Postiz or TryPost for more channels, AI, and self-hosting. Choose Mixpost for a one-time license.
Feature comparison
| Project | License | Hosting | Price | Platforms |
|---|---|---|---|---|
| Catpix | MIT | Hosted | Free | 8 |
| Postiz | AGPL-3.0 | Hosted or self-host | $29-$99/mo | 20+ |
| Mixpost | Lite OSS / Pro source-available | Self-host or cloud | $299 one-time | 3 Lite / 12 Pro |
| TryPost | AGPL-3.0 | Hosted or self-host | $19/$99/mo | 13 |
How we compared
We looked at license, hosting model, platform coverage, API/MCP support, team features, and total cost. Self-hosting shifts cost from subscription fees to servers and maintenance.
Who each is for
Catpix is for solo users who want free hosted scheduling. Postiz is for teams that want more channels and AI. Mixpost is for teams that want to own the server and pay once. TryPost is for teams that want approvals and AI with a flat cloud price or self-hosting.
What Catpix costs
Catpix is free. There is no per-channel fee, no per-seat fee, and the API is included with an account. X is the only metered network: Catpix passes X API costs through at cost ($0.015 for a plain post, $0.20 for a post with a link). Catpix currently supports eight platforms: Bluesky, X, LinkedIn, Facebook, Instagram, Threads, TikTok, and YouTube.
Where Catpix wins
- Free hosted scheduling.
- MIT license.
- Simple cross-posting workflow.
- Android app.
- API included.
Where the other projects still win
- More channels and AI (Postiz, TryPost).
- Self-hosting and data control (Postiz, Mixpost, TryPost).
- Multi-tenant and white-label (Mixpost, Postiz).
- Approvals and collaboration (TryPost).
- One-time pricing (Mixpost).
Who should choose which
Choose Catpix if you want free hosted scheduling and a simple workflow.
Choose another project if you need self-hosting, more channels, AI, approvals, or multi-tenancy.
FAQ
Which is easiest to self-host?
Mixpost is designed for self-hosting; Postiz and TryPost also support it.
Which has the best API?
All four have APIs; Postiz, Mixpost, and TryPost add MCP.
Which is best for agencies?
Mixpost and TryPost have stronger workspace/approval features.
Which is free?
Catpix is free hosted; Mixpost Lite and the open-source versions are free to self-host.
Related comparisons
Try Catpix free
Schedule across eight platforms, use the API, and keep your budget for content instead of per-channel fees.
Open Catpix- Written with AI with Human edits