Postiz is an open-source social media management platform for scheduling and publishing posts across platforms, with AI-agent features for generating and adapting content per channel. Self-host it for free or use the hosted postiz.com plan. AGPL-3.0 licensed, 34,000+ GitHub stars.
Postiz is an open-source social media management platform for scheduling and publishing content across multiple channels from one place. You connect your accounts, compose a post, pick where and when it goes out, and work from a calendar view of what is queued. Its distinguishing feature is the agentic side: AI assistance for generating content and adapting a single idea to each platform, since what reads well in one feed is rarely the right shape for another. It is licensed under AGPL-3.0 and can be self-hosted, which matters here because social scheduling means storing platform access tokens, and running it yourself keeps those tokens and your content calendar on infrastructure you control. There is also a hosted option run by the project if you would rather not operate it. The realistic caveat with any tool in this category is that publishing depends on third-party platform APIs, whose access rules and limits change without warning.
This fits solo founders, small teams and agencies who post to several platforms regularly and want a calendar plus scheduling without a per-seat subscription to a commercial suite. Self-hosting makes it attractive when you manage accounts on behalf of clients and would rather not have their credentials sitting in another vendor's system. The AI adaptation features help most when you are repurposing one piece of content into several native-feeling posts instead of writing each from scratch. It is less compelling if you need deep analytics, approval workflows and account management at agency scale, or if you simply do not want to be responsible when a platform API change breaks publishing at an awkward moment.
Dub is the other open-source, self-host-or-cloud marketing tool in this set, handling short links and click analytics, which pairs with Postiz rather than replacing it since the links in your scheduled posts are exactly what Dub measures. n8n could technically post to social platforms as one step in a workflow, and is the better choice when publishing is a side effect of some larger automation, but it gives you no content calendar or composer. Papercups sits on the inbound side, handling customer conversations rather than outbound publishing. Pick Postiz when scheduling and publishing social content is the actual job rather than a step in something else.
The catalog records Postiz as freemium. The code is AGPL-3.0 licensed and free to self-host, while the project also sells a hosted plan for people who do not want to run it. Self-hosting costs you a server, a database, and the maintenance of platform integrations when APIs shift. AI features call model providers, which bill on usage, so that is a separate variable cost on top. The AGPL is worth reading carefully if you plan to offer a modified version as a service to others, because its obligations are stronger than a permissive license.
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