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161 projects, sorted by GitHub stars.

JanusGraph

Alternative toNeo4j

Distributed open source graph database for massive scale

  • 5,858 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #Database

SuiteCRM

Alternative toSalesforce Sales Cloud

Self-hosted CRM with leads, quotes, and workflow automation.

  • 5,805 GitHub stars
  • AGPL-3.0Licence AGPL-3.0
  • #CRM

Soketi

Alternative toPusher

Self-hosted Pusher-compatible WebSocket server, open source

  • 5,635 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

Natron

Alternative toFoundry Nuke

Free node-based compositing software for visual effects

  • 5,590 GitHub stars
  • GPL-2.0Licence GPL-2.0
  • #Video

open-science

Alternative toClaude Science

Open-source AI workbench for reproducible scientific research

  • 5,304 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #AI Agents

Frappe Books

Alternative toQuickBooks Online

Free bookkeeping app for small businesses, stores data locally

  • 4,998 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

OrientDB

Alternative toAzure Cosmos DB

Multi-model NoSQL database: graphs, docs, and key-value

  • 4,995 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #Database

stt

Alternative toMacWhisper

Local speech-to-text with multi-format output and GPU acceleration

  • 4,823 GitHub stars
  • GPL-3.0Licence GPL-3.0

PDFsam Basic

Alternative toAdobe Acrobat

Split, merge, rotate, and extract PDF pages for free

  • 4,632 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

renodx

InDeveloper Tools

Game-specific HDR mods and shader replacement for DirectX titles

  • 4,560 GitHub stars
  • MITLicence MIT

LibreOffice

Alternative toMicrosoft 365

Free office suite with Writer, Calc, and Impress on any platform

  • 4,540 GitHub stars
  • GPL-3.0Licence GPL-3.0

Pinta

Alternative toAdobe Photoshop

Free open source image editor inspired by Paint.NET

  • 4,103 GitHub stars
  • MITLicence MIT
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