flohmarkt

flohmarkt is a self-hostable web application for publishing and browsing small advertisements. Posts can federate beyond a single server, allowing ads and interactions to flow across flohmarkt instances and other Fediverse software.

Key Features

• Publish small ads through a simple web form for registered users
• Public browsing of ads for anyone who can access the site
• ActivityPub federation so ads can be viewed, boosted, and replied to from other Fediverse accounts
• Direct/private replies enable contacting an ad author via Fediverse messaging conventions
• Ability to follow flohmarkt accounts from Fediverse clients to receive new ads in a timeline
• Optional user registration (can be disabled for single-user or closed communities)
• Email-based account confirmation
• Location-aware setup (community coordinates and radius) to encourage local exchange and optionally federate with nearby flohmarkts

Use Cases

• Run a local community classifieds board that also federates into the wider Fediverse
• Host a small, invite-only marketplace for a group, club, or neighborhood
• Share and discover offers across nearby federated flohmarkt instances to reduce travel distance

Limitations and Considerations

• The master branch is explicitly not considered stable for production use; releases with version numbers are recommended to avoid data loss

flohmarkt fits communities that want a lightweight classifieds experience while leveraging Fediverse federation for discovery and communication. Its location-oriented federation model is designed to nudge toward more local, trustable exchanges while still remaining open to broader federation.