Can I open-source posterly?
KINDA · partial or early alternativesKinda. Postiz and Mixpost cover the core of posterly, but they're early or partial — expect gaps like 18 maintained platform integrations, including approval-gated ones (Instagram, LinkedIn, TikTok, Facebook, Google Business Profile) and a voice model trained on your actual post history and what performed well, not a static prompt template.
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.
x18 maintained platform integrations, including approval-gated ones (Instagram, LinkedIn, TikTok, Facebook, Google Business Profile)
xa voice model trained on your actual post history and what performed well, not a static prompt template
xGoogle Business Profile review replies and photo management
xclient approval portal and content-plan review for agencies managing multiple brands
xper-platform video/image transcoding tuned to each network's limits
xa hosted MCP server + REST API built for agents, not bolted on after the fact
These projects already replace it, free.
PPostizOpen-source social media management and scheduling platform with agentic posting workflows.open source↗MMixpostSelf-hosted social media scheduling and publishing (Laravel). Queue posts to multiple networks without per-seat pricing.open source↗What each one is, in full: Postiz · Mixpost
no votes, no pay-to-list · just what's real
posterly pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| starter | $7 | $5.58 | 5 connected social accounts, 1 seat, 1 brand, 0 link-in-bio pages, 300 AI credits/month |
| pro | $15 | $12 | 12 connected social accounts, 3 seats, 5 brands, 5 link-in-bio pages, 800 AI credits/month |
free tierno free tier
billingmonthly + annual; 7-day trial and 7-day money-back guarantee
hidden costsThe MCP/API is a separate $3/month add-on; the Agency API is $29/month. X publishing can require separately priced X capacity because of X API costs.
verified 2026-08-14 · source ↗
Can I open-source posterly?
Kinda. Postiz covers the core of posterly, but there are real gaps: 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. Read the honest list above before committing.
How much does posterly cost?
posterly costs about $15/month (Pro, checked 2026-07-30), which is $180 per year.
What do I lose by replacing posterly?
Honestly: 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. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to posterly?
Yes: Postiz (Open-source social media management and scheduling platform with agentic posting workflows.) Mixpost (Self-hosted social media scheduling and publishing (Laravel). Queue posts to multiple networks without per-seat pricing.)