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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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Featured Articles

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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.

project-managementopen-source

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: Lago, Kill Bill, Hyperswitch, BTCPay. Which self-hosted billing tool fits your SaaS pricing model in 2026.

billingpayments

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.

self-hostedphotos

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.

self-hostedsecurity

Coolify vs CapRover vs Dokku 2026

Compare Coolify, CapRover, and Dokku as self-hosted PaaS platforms in 2026. Resource use, Docker support, SSL, app catalogs, and which to pick for your stack.

coolifycaprover

Infisical vs Doppler vs Vault 2026

Infisical, Doppler, and HashiCorp Vault compared for secrets management in 2026. Self-host options, dynamic secrets, audit logs, and pricing for growing teams.

infisicaldoppler

Lago vs Kill Bill vs Stripe Billing 2026

Lago, Kill Bill, and Stripe Billing compared for 2026. Open-source metered billing engines vs managed SaaS — pricing models, self-host options, dev experience.

lagokill-bill

Opencom vs Chatwoot vs Papercups: Self-Hosted Chat 2026

Compare Opencom, Chatwoot, and Papercups — self-hosted Intercom alternatives. Features, Docker Compose, agent tooling, and which fits your stack in 2026.

chatwootpapercups

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

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