Can I open-source PostFast?

YES · mature open-source replacement

price $33.45/moyou'd save $401.40/yrcategory 🐦 social mediareplaced by 0 people

Yes. Postiz (34k stars), Mixpost (6k stars), BrightBean Studio (2k stars) are mature open-source replacements for PostFast — self-host with real ops work and stop paying $33.45/mo.

why people still pay

Connecting Instagram or TikTok here is one click because the OAuth app behind it already passed Meta App Review, TikTok's audit, and Google's business verification, a process that takes weeks and that a solo builder often cannot qualify for at all. Video is the other half of the bill: each platform enforces its own container, codec, aspect ratio, duration, and size rules, so a working scheduler runs a real transcode pipeline with async jobs, retries, and honest failure states rather than one hopeful upload call. The subscription also absorbs the work that never finishes: tokens expiring, per-platform media rules changing, endpoints deprecating on someone else's schedule. Above that sits the part a rebuild would not reach anyway, which is cross-account analytics and follower history, approvals and workspaces for running client accounts, and an API plus MCP server so your agent schedules through it instead of you maintaining a poster forever.

what you lose

xnine of the eleven destinations, which need app review or a paid API tier rather than more code

xpre-approved OAuth apps for Instagram, TikTok, YouTube, LinkedIn, Pinterest, and Google Business Profile

xthe video pipeline: per-platform container, codec, aspect ratio, duration, and size rules, plus async processing and the retries for when a large upload fails partway

xtoken refresh and the steady patching as platform policies move

xanalytics, follower history, approval workflows, and per-client workspaces

xthe hosted API, MCP server, and n8n/Zapier/Make integrations that let an agent post for you

the open-source alternatives

These projects already replace it, free.

PPostizMore networks, team features, analytics, API and MCP; also more databases than a scheduler ought to need.34kaug 2026open source↗BBrightBean StudioPublishing, analytics, approvals, API and MCP in a free hosted product; network count is broad, not eleven-shaped.2.1kjul 2026open source↗TTryPostTwelve networks, analytics, approvals, REST and MCP; free software with non-free operational attention.468aug 2026open source↗

What each one is, in full: Postiz

all 4 open-source alternatives to PostFast →· no votes, no pay-to-list · just what's real

share on X ↗"I just replaced PostFast ($33.45/mo) with open source"

the numbers

PostFast pricing

plan	monthly	annual (per mo)	what you get
starter	$13.84	$11.53	4 social accounts, 150 scheduled posts, 50 drafts, 1 workspace, 1 user, 90-day scheduling window, 30-day history, max 2 X accounts
creator	$33.45	$27.68	12 social accounts, 1,500 scheduled posts, 600 drafts, 4 workspaces, 5 users, 180-day window, 1-year history, max 6 X accounts
growth	$56.52	$46.14	30 social accounts, 3,000 scheduled posts, 2,000 drafts, 10 workspaces, 8 users, 240-day window, 2-year history, max 12 X accounts
pro agency	$114.19	$95.16	120 social accounts, unlimited scheduled posts/drafts, 30 workspaces, 15 users, max 36 X accounts
enterprise	$275.66	$229.53	500 social profiles, unlimited scheduled posts/drafts, 110 workspaces, 30 users, max 45 X accounts

free tierno free tier

billingmonthly + annual (2 months free); 7-day trial, no credit card

hidden costsHard caps apply to social accounts, workspaces, users, queued posts, drafts and X accounts; going past them requires a higher plan. Prices are EUR and USD totals move with exchange rates.