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415 projects, sorted by GitHub stars.

Cal.diy

Alternative toCalendly

MIT self-hosted scheduling without Cal.com enterprise code

  • 49,183 GitHub stars
  • MITLicence MIT

3x Ui

Alternative toOpenVPN Access Server

Web panel for Xray-core with per-client and multi-node controls

  • 48,290 GitHub stars
  • GPL-3.0Licence GPL-3.0

Discourse

Alternative toBettermode

Open source forum and community platform, self-hosted

  • 47,998 GitHub stars
  • GPL-2.0Licence GPL-2.0
  • #Chat

Gogs

Alternative toGitHub

Lightweight self-hosted Git server that is painless to set up

  • 47,895 GitHub stars
  • MITLicence MIT

SiYuan

Alternative toNotion

Block-based notes with backlinks and end-to-end encrypted sync

  • 46,858 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

Rocket.Chat

Alternative toMicrosoft Teams

Self-hosted team chat with voice, video, and omnichannel support

  • 46,298 GitHub stars
  • MITLicence MIT
  • #Chat

LibreChat

Alternative toChatGPT

One self-hosted interface for every AI model you use

  • 46,147 GitHub stars
  • MITLicence MIT
  • #AI Agents

Payload CMS

Alternative toContentful

Build code-first CMS backends with TypeScript schemas

  • 45,369 GitHub stars
  • MITLicence MIT

Logseq

Alternative toRoam Research

Privacy-first knowledge base with outliner and graph view

  • 45,303 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

Jan

Alternative toChatGPT

Run open source LLMs on your own hardware with no cloud required

  • 45,019 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #LLM

Herdr

Alternative toConductor

Agent runtime that keeps terminals alive across machines

  • 44,852 GitHub stars
  • Apache-2.0Licence Apache-2.0

openhuman

Alternative toMuse

Personal AI agent with local memory and 100+ integrations

  • 42,188 GitHub stars
  • GPL-3.0Licence GPL-3.0
  • #AI Agents
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