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421 projects, sorted by GitHub stars.

QuestDB

Alternative toInfluxDB Cloud

Ingest high-frequency data and query it in real time with SQL

  • 17,454 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #Database

Sonarr

InIT Management

Smart PVR for Usenet and BitTorrent TV fans

  • 17,354 GitHub stars
  • GPL-3.0Licence GPL-3.0

OpenProject

Alternative toJira

Plan projects with Gantt, Scrum, and Kanban, all self-hostable

  • 16,508 GitHub stars
  • GPL-3.0Licence GPL-3.0

claude-obsidian

Alternative toMem

Self-organizing AI second brain for Obsidian, plain Markdown

  • 15,696 GitHub stars
  • MITLicence MIT
  • #LLM

Grav

Alternative toWordPress.com

Flat-file CMS for fast, self-hosted websites.

  • 15,689 GitHub stars
  • MITLicence MIT

AITable

Alternative toAirtable

Airtable alternative with an AI chatbot builder, self-hostable

  • 15,639 GitHub stars
  • AGPL-3.0Licence AGPL-3.0
  • #Database

documenso

Alternative toDocuSign

Open source DocuSign alternative with enterprise e-signatures

  • 15,488 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

PeerTube

Alternative toVimeo

Federated video hosting you own, with no YouTube dependency

  • 15,372 GitHub stars
  • AGPL-3.0Licence AGPL-3.0
  • #Video

ZITADEL

Alternative toAuth0

Open source identity platform with SSO, RBAC, and multi-tenancy

  • 15,354 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

OneDev

Alternative toGitHub

Git, CI/CD, issue tracking, wikis, and AI agents on your own server.

  • 15,327 GitHub stars
  • MITLicence MIT

CrowdSec

Alternative toCloudflare

Community-powered threat detection and IP blocklist

  • 15,226 GitHub stars
  • MITLicence MIT
  • #Security

CapRover

Alternative toHeroku

Self-hosted PaaS: deploys any language, automatic HTTPS, zero fees.

  • 15,187 GitHub stars
  • CustomLicence Apache-2.0 with additional terms
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