
Official FusionPBX - A full-featured domain based multi-tenant PBX and voice switch for FreeSwitch.

FusionPBX is a full-featured, domain-based multi-tenant PBX and voice switch built on FreeSWITCH, delivering carrier-grade communication capabilities to businesses of all sizes. It enables organizations to configure and manage advanced telephony features without the complexity and cost of traditional phone systems. Written in PHP and actively maintained by a dedicated community, FusionPBX provides both the flexibility of open source and the reliability needed for mission-critical communications.
FusionPBX is designed for small to large businesses, service providers, and system administrators seeking a powerful, open-source alternative to proprietary PBX systems. It's ideal for organizations that need flexibility, cost-effectiveness, and carrier-grade features without vendor lock-in.

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.

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability

⚡ The future of programmable SIP servers.

OpenSIPS is a GPL implementation of a multi-functionality SIP Server that targets to deliver a high-level technical solution (performance, security and quality) to be used in professional SIP server platforms.

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.

Production-ready platform for agentic workflow development.

Production-ready platform for agentic workflow development.

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

Virtual whiteboard for sketching hand-drawn like diagrams

High performance self-hosted photo and video management solution.

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

JavaScript API for Chrome and Firefox