Posthive is an open-source agentic social media scheduler built for creators, developers, and teams who are tired of switching between tabs just to post the same update everywhere. Write once. Schedule to Bluesky, Threads, Instagram, LinkedIn, Mastodon, YouTube, Facebook, Pinterest, Telegram, and more all from a single composer. What makes Posthive different: First comment automation - schedule a reply that fires the second your post goes live, on every platform Bulk CSV scheduling - upload a spreadsheet and schedule hundreds of posts at once Drag-to-reschedule calendar - see your whole content plan and move posts in seconds Per-platform overrides - customize text and media per network without leaving the composer MCP integration - let Claude, Cursor, or any AI agent schedule and manage posts directly Self-hostable - deploy on your own infrastructure under AGPL-3.0, full control, no lock-in 14-day free trial. No credit card required.