Postmarks
Single-user bookmarking site with ActivityPub federation
546 stars 43 forks last commit first released MIT
Actively maintained
Last commit 15 May 2026.
Postmarks is a single-user bookmarking website you host yourself, designed to connect to the Fediverse via ActivityPub. It lets you curate and publish bookmarks from your own instance while interacting with other Postmarks instances and compatible text-based ActivityPub platforms.
Key Features
- Single-user bookmark manager with add, edit, and delete functionality
- ActivityPub server features for federation with Mastodon and similar platforms
- Admin area protected by an instance login key
- Bookmark import and a browser bookmarklet for quick saving
- Configurable actor profile (username, display name, bio, avatar) via local configuration
- Optional Mastodon profile verification link via environment configuration
Use Cases
- Maintain a personal, self-owned bookmarking site that can be followed from the Fediverse
- Share and discover bookmarks through federation with other ActivityPub instances
- Publish a curated set of links as a lightweight personal linklog
Limitations and Considerations
- Designed for a single owner account rather than multi-user teams
- Federation is focused on text-based ActivityPub platforms and interoperability may vary by server
Postmarks is a good fit if you want a simple, self-controlled bookmarking workflow with Fediverse-native publishing. It combines a traditional bookmark manager with ActivityPub federation to make your saved links more social and discoverable.
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