Postiz Review 2026: The Open-Source Scheduler That Handles 34 Platforms for Free

If you manage content across multiple social platforms, you have probably looked at Buffer, Later, or Hootsuite. Then you saw the per-profile pricing, the 7-day queue limit on free plans, and the "contact us for pricing" enterprise tiers. Postiz is the open-source alternative that flips this model: run it on your own server, connect unlimited profiles, and pay nothing for the software itself.

In this 2026 review, we dig into what Postiz actually does, how much it costs to self-host, what the 34-platform support looks like in practice, and where it still trails the commercial incumbents.

What Is Postiz?

Postiz is an open-source, self-hostable social media scheduling and analytics platform. It was built by the GitRoom team and has accumulated over 29,000 GitHub stars — making it one of the most-starred open-source social media tools in existence.

Unlike cloud-only tools, Postiz gives you two options:

• Self-hosted (free): Download the Docker image, run it on a $5/month VPS or your own hardware, own all your data.
• Cloud hosted ($29/month): Postiz runs the infrastructure for you — the same software, zero server management.

34 Platforms Supported in 2026

Postiz breadth of integration is its headline feature. The full list as of September 2026 includes:

This is not a comprehensive list — Postiz adds new integrations regularly. The key advantage: one calendar, one dashboard, one login for creators who would otherwise pay for three or four separate tools.

Postiz vs. Buffer vs. Hootsuite: How It Stacks Up

The gap narrows on advanced analytics and social inbox features — Postiz is catching up fast but still trails Hootsuite's listening suite. For pure scheduling and cross-posting, Postiz matches or exceeds what most creators actually need.

AI Features Built In

Postiz ships with an AI assistant that generates post captions, images, and content ideas. It works with any LLM you connect via API — bring your own OpenAI key, Anthropic key, or use a local model.

The AI features include:

• Caption generation: Enter a topic, get platform-tailored captions in any language.
• Image generation: Create promotional images directly within the compose window.
• Hashtag suggestions: AI suggests relevant hashtags based on your post content.
• Content calendar insights: AI highlights optimal posting times based on your audience activity.

The AI is optional — you can disable it entirely and write everything manually, just like a traditional scheduler.

Setting Up Postiz in 10 Minutes (Self-Hosted)

You need: a Linux server (or Docker Desktop on macOS/Windows), Docker, and about 10 minutes.

Full documentation is available at docs.postiz.com. The Postiz team also maintains an official Docker image on Docker Hub, so you do not need to build from source unless you want to customize the code.

Team Collaboration Features

Postiz supports multi-user workspaces, role-based permissions, and a client-facing calendar view. This makes it viable for:

• Agency workflows: Invite clients as viewers so they can see the content calendar without full editor access.
• Brand teams: Separate posting rights from approval rights — writers draft, editors publish.
• Solo creators: Even solo use benefits from having a structured calendar and post history.

Real Costs in 2026

Here is what self-hosting Postiz actually costs:

• Software: $0 (AGPL open-source)
• Server (DigitalOcean / Hetzner basic VPS): $5–$20/month
• Domain (optional): $10–$15/year
• LLM API calls (optional): Pay-as-you-go per your provider (OpenAI ~$0.001/1K tokens)

Compared to Buffer's $15/profile/month plan with 10 profiles, a creator managing 10 platforms saves $1,500/year by self-hosting Postiz.

Who Should NOT Use Postiz

Postiz is not the right tool in every situation:

• Enterprise social teams needing advanced listening/analytics: Sprout Social or Hootsuite have years of data aggregation Postiz cannot match yet.
• Non-technical users who want zero server management: The cloud version exists ($29/month) but requires less technical skill than self-hosting.
• Creators who only use 1–2 platforms: Native platform schedulers (TikTok Studio, Instagram Business) may be simpler.