PushBits

PushBits is a simple server for sending push notifications, delivered to users over the Matrix protocol rather than through a dedicated mobile app. It is aimed at self-hosters who already use Matrix and want a lightweight alternative to services such as Pushover and Gotify without maintaining separate notification clients.

On the sending side, PushBits aims for compatibility with Gotify's API, so existing integrations built for Gotify, such as plugins for Watchtower or Jellyfin, can send notifications through PushBits with little change. On the receiving side, it relies on an established Matrix client instead of a custom app. It supports multiple users and multiple channels, or applications, per user, an API and CLI for managing users and applications, an optional check for weak passwords using the Have I Been Pwned database, and Argon2 for password hashing.

The README states the project is in alpha and that the original author is looking for new maintainers due to limited time. It is written in Go and released under the ISC license, and planned features such as two-factor authentication and bidirectional key verification are tracked as open issues.