Postmill

Open-source social publishing workspace with an AI writer, design studio, scheduler, engagement inbox and reporting.

Users can bring their own model keys for the brand-voice writer, design posts and video on built-in canvases, then manage publishing, inbox replies, and campaign reports. The vendor also describes a self-hosted open-source option.

Supported use cases

Create a branded post

Draft copy, design its media, and prepare it for the scheduler.

Manage engagement

Review inbox activity and AI-prepared response drafts.

Operate a self-hosted workspace

Use the vendor-described deployment option where infrastructure control is required.