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Find Open Source Alternatives

Ditch paid software. Discover open source tools that actually work.

80+

Alternatives

25

Categories

2019k+

GitHub Stars Tracked

Featured Projects

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Excalidraw icon

Excalidraw

Virtual whiteboard for sketching hand-drawn diagrams and wireframes

118kMITSelf-hostable
TypeScriptReactwhiteboarddiagrams
Grafana icon

Grafana

Open source observability platform for metrics, logs, and traces

66kAGPL-3.0Self-hostable
TypeScriptGoReactmonitoringobservability
Supabase icon

Supabase

Open source Firebase alternative with Postgres, auth, and edge functions

75kApache-2.0Self-hostable
TypeScriptElixirGobackendpostgres
Cal.com icon

Cal.com

Open source scheduling infrastructure — the Calendly alternative for individuals and teams

40.4kAGPL-3.0Self-hostable
TypeScriptReactNext.jsschedulingcalendar
Apache Superset icon

Apache Superset

Modern data exploration and visualization platform

63kApache-2.0Self-hostable
PythonTypeScriptReactbusiness-intelligencedashboards
Mattermost icon

Mattermost

Secure, self-hosted team messaging platform as an alternative to Slack

35.6kMITSelf-hostable
GoTypeScriptReactchatmessaging
Vaultwarden icon

Vaultwarden

Lightweight Bitwarden-compatible server in Rust

41kAGPL-3.0Self-hostable
Rustpassword-managervault
Meilisearch icon

Meilisearch

Lightning-fast open source search engine — Algolia alternative

48kMITSelf-hostable
Rustsearchfull-text
Discourse icon

Discourse

Open source community discussion platform

43kGPL-2.0Self-hostable
RubyJavaScriptEmber.jsforumcommunity
Uptime Kuma icon

Uptime Kuma

Self-hosted monitoring tool with status pages and notifications

62kMITSelf-hostable
JavaScriptVueNode.jsmonitoringuptime
PocketBase icon

PocketBase

Open source backend in a single binary — Firebase alternative

42kMITSelf-hostable
GoJavaScriptSQLitebackendauth
n8n icon

n8n

Fair-code workflow automation with 400+ integrations

50kSustainable Use LicenseSelf-hostable
TypeScriptVueNode.jsautomationworkflow
Syncthing icon

Syncthing

Continuous peer-to-peer file synchronization

67kMPL-2.0Self-hostable
Gofile-syncpeer-to-peer
Appwrite icon

Appwrite

Open source BaaS — Firebase alternative with auth, database, storage

46kBSD-3-ClauseSelf-hostable
TypeScriptPHPDartbackendauth
NocoDB icon

NocoDB

Open source Airtable alternative — turns any database into a smart spreadsheet

62.3kAGPL-3.0Self-hostable
TypeScriptVueNode.jsdatabasespreadsheet
Nextcloud icon

Nextcloud

Self-hosted productivity platform with file storage, sharing, collaboration, and more

34.2kAGPL-3.0Self-hostable
PHPJavaScriptVuefile-storagesync
Plausible Analytics icon

Plausible Analytics

Lightweight and privacy-friendly web analytics — no cookies, fully GDPR compliant

24.3kAGPL-3.0Self-hostable
ElixirTypeScriptReactweb-analyticsprivacy
Outline icon

Outline

Beautiful wiki and knowledge base for teams

29kBSD-3-ClauseSelf-hostable
TypeScriptReactNode.jswikiknowledge-base
Keycloak icon

Keycloak

Open source identity and access management — Auth0 alternative

24kApache-2.0Self-hostable
JavaJavaScriptidentitysso
Bitwarden icon

Bitwarden

Open source password manager with browser extensions and team vaults

16kAGPL-3.0Self-hostable
C#.NETTypeScriptpassword-managervault
Medusa icon

Medusa

Open source headless commerce engine — Shopify alternative

27kMITSelf-hostable
TypeScriptNode.jsReacte-commerceheadless
Coolify icon

Coolify

Open source Heroku/Vercel alternative — self-hosted PaaS

37kApache-2.0Self-hostable
PHPLaravelJavaScripthostingpaas
Metabase icon

Metabase

Open source business intelligence with SQL and no-code query builder

39kAGPL-3.0Self-hostable
ClojureTypeScriptReactbusiness-intelligencedashboards
Hoppscotch icon

Hoppscotch

Open source API development ecosystem — Postman alternative

66kMITSelf-hostable
TypeScriptVueNuxtapi-clienttesting
Dub icon

Dub

Open source link management — Bitly alternative

19kAGPL-3.0Self-hostable
TypeScriptReactNext.jsurl-shortenerlinks
Twenty CRM icon

Twenty CRM

Modern open source CRM — a beautiful alternative to Salesforce and HubSpot

40.2kAGPL-3.0Self-hostable
TypeScriptReactNode.jscrmsales
Jitsi Meet icon

Jitsi Meet

Open source video conferencing solution that is secure and easy to deploy

28.7kApache-2.0Self-hostable
JavaScriptTypeScriptReactvideo-conferencingmeetings
Dokku icon

Dokku

The smallest PaaS — Heroku alternative with git push deployment

29kMITSelf-hostable
ShellGohostingpaas
Plane icon

Plane

Open source project management for teams

31kAGPL-3.0Self-hostable
TypeScriptPythonReactproject-managementissue-tracking
Authentik icon

Authentik

Open source identity provider with modern UI and flows

14kMITSelf-hostable
PythonDjangoTypeScriptidentitysso
Umami icon

Umami

Simple, fast, privacy-focused web analytics

23kMITSelf-hostable
TypeScriptReactNext.jsanalyticsprivacy
AppFlowy icon

AppFlowy

Open source alternative to Notion — AI-powered workspace for wikis, docs, and projects

68.4kAGPL-3.0Self-hostable
RustDartFlutternoteswiki
BookStack icon

BookStack

Simple, self-hosted wiki platform organized by books, chapters, and pages

16kMITSelf-hostable
PHPLaravelJavaScriptwikidocumentation
Continue icon

Continue

Open source AI code assistant for VS Code and JetBrains

22kApache-2.0Self-hostable
TypeScriptPythonaicode-assistant
Bruno icon

Bruno

Fast, Git-friendly API client — Postman alternative

29kMIT
JavaScriptReactNode.jsapi-clientgit-friendly
Chatwoot icon

Chatwoot

Open source customer engagement platform — alternative to Intercom for live chat and support

27.5kMITSelf-hostable
RubyVueJavaScriptcustomer-supportlive-chat
Listmonk icon

Listmonk

High-performance, self-hosted newsletter and mailing list manager

19.2kAGPL-3.0Self-hostable
GoVueJavaScriptnewsletteremail
Tabby icon

Tabby

Self-hosted AI coding assistant with local models

24kApache-2.0Self-hostable
RustTypeScriptPythonaicode-completion
Rocket.Chat icon

Rocket.Chat

Open source team communication platform

41kMITSelf-hostable
TypeScriptJavaScriptMeteorchatmessaging
Typesense icon

Typesense

Fast, typo-tolerant search engine — Algolia alternative

21kGPL-3.0Self-hostable
C++searchfull-text
Penpot icon

Penpot

Open source design and prototyping platform for cross-domain teams

44.5kMPL-2.0Self-hostable
ClojureClojureScriptdesignprototyping
Saleor icon

Saleor

Open source headless commerce platform with GraphQL API

21kBSD-3-ClauseSelf-hostable
PythonDjangoGraphQLe-commerceheadless
Infisical icon

Infisical

Open source secrets management platform

16kMITSelf-hostable
TypeScriptReactNode.jssecretssecurity
Wiki.js icon

Wiki.js

Powerful open source wiki engine with visual editor and Git sync

25kAGPL-3.0Self-hostable
JavaScriptVueNode.jswikidocumentation
Documenso icon

Documenso

Open source DocuSign alternative

9kAGPL-3.0Self-hostable
TypeScriptReactNext.jsdocument-signinge-signature
Trigger.dev icon

Trigger.dev

Open source background jobs framework for TypeScript

10kApache-2.0Self-hostable
TypeScriptReactNode.jsautomationbackground-jobs
Formbricks icon

Formbricks

Open source survey platform — Typeform alternative

9kAGPL-3.0Self-hostable
TypeScriptReactNext.jsformssurveys
Baserow icon

Baserow

Open source no-code database — Airtable alternative

12kMITSelf-hostable
PythonDjangoVueno-codedatabase
Lago icon

Lago

Open source metering and usage-based billing

7.5kAGPL-3.0Self-hostable
RubyTypeScriptReactbillingmetering
OpenStatus icon

OpenStatus

Open source monitoring and status page platform

6.5kMITSelf-hostable
TypeScriptReactNext.jsmonitoringstatus-page
Highlight.io icon

Highlight.io

Open source full-stack monitoring — error tracking, session replay, logging

8.5kApache-2.0Self-hostable
TypeScriptGoReacterror-trackingsession-replay
Focalboard icon

Focalboard

Open source project management tool with kanban, table, and calendar views

22kAGPL-3.0Self-hostable
TypeScriptGoReactkanbanproject-management
Docmost icon

Docmost

Open source collaborative wiki and documentation software — Notion and Confluence alternative

19.2kAGPL-3.0Self-hostable
TypeScriptReactNode.jswikidocs

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Daytona vs DevPod vs Coder: Dev Envs 2026

Daytona vs DevPod vs Coder for self-hosted dev environments in 2026. Stars, architecture, Terraform vs devcontainer, pricing, and which fits your team's needs.

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Rybbit vs Plausible vs Umami: Analytics 2026

Rybbit vs Plausible vs Umami compared for open source analytics in 2026. Session replay, pricing, self-hosting, and which privacy-first tool fits your stack.

analyticsself-hosting

Self-Host Postiz: Open Source Social Scheduler 2026

Self-host Postiz free in 2026: open source Buffer alternative for 17+ platforms including X, LinkedIn, and TikTok. Deploy with Docker Compose on any VPS.

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FreshRSS vs Miniflux: Self-Hosted RSS 2026

FreshRSS vs Miniflux: comparing the two best self-hosted RSS readers in 2026. See which wins on speed, setup, mobile apps, multi-user support, and cost.

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Plane vs Linear 2026: Self-Host or SaaS?

Plane vs Linear compared: pricing, self-hosting, speed, and features for 2026. Find out which open source project management tool is right for your team.

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Twenty CRM vs HubSpot 2026: OSS vs SaaS

Twenty CRM vs HubSpot 2026: self-hosting, pricing, features, and CRM data ownership compared. The 40K-star open source alternative to HubSpot — is it ready?

crmopen-source

Best Open Source GitHub Alternatives 2026

Best open source GitHub alternatives: Forgejo, Gitea, GitLab CE, OneDev, Gogs compared on features, resource usage, and CI/CD. Self-host your git forge in 2026.

gitself-hosted

Open Source Stripe Alternatives 2026

Open source Stripe alternatives compared in 2026: Lago, Kill Bill, Hyperswitch, BTCPay. Find the right self-hosted billing tool for your SaaS pricing model.

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Immich vs Ente vs Lychee: Self-Hosted Photos 2026

Immich vs Ente vs Lychee for self-hosted photo management in 2026. Face recognition, mobile apps, Docker setup time, and which to run on your home server.

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Passbolt vs Vaultwarden vs Bitwarden 2026

Passbolt vs Vaultwarden vs Bitwarden for self-hosted team password management in 2026. Compared on RAM usage, setup time, team sharing features, and total cost.

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The SaaS-to-Self-Hosted Migration Guide (Free PDF)

Step-by-step: infrastructure setup, data migration, backups, and security for 15+ common SaaS replacements. Used by 300+ developers.

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