
Send push notifications to your phone or desktop using PUT/POST

Send push notifications to your phone or desktop via simple HTTP PUT/POST requests. ntfy is a lightweight, open-source pub-sub notification service that requires no sign-up, authentication, or fees to use the public instance.
Developers and system administrators who need a simple, lightweight way to receive notifications from scripts and automated processes without managing complex infrastructure or dealing with vendor lock-in.

The open-source notification infrastructure. In-app Inbox component, E-mail, SMS, Push and Slack Integrations.

A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)

Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.

Janus WebRTC Server

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.

The official Asterisk Project repository.

A list of Free Software network services and web applications which can be hosted on your own servers

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

Get up and running with Kimi-K2.5, GLM-5, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

Virtual whiteboard for sketching hand-drawn like diagrams

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

High performance self-hosted photo and video management solution.

The world’s fastest framework for building websites.

A fancy self-hosted monitoring tool

Open Source Continuous File Synchronization