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

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Grafana icon

Grafana

Open source observability platform for metrics, logs, and traces

73kAGPL-3.0Self-hostable
TypeScriptGoReactmonitoringobservability
Supabase icon

Supabase

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

100kApache-2.0Self-hostable
TypeScriptElixirGobackendpostgres
Excalidraw icon

Excalidraw

Virtual whiteboard for sketching hand-drawn diagrams and wireframes

120kMITSelf-hostable
TypeScriptReactwhiteboarddiagrams
Cal.com icon

Cal.com

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

41kAGPL-3.0Self-hostable
TypeScriptReactNext.jsschedulingcalendar
Appwrite icon

Appwrite

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

55.5kBSD-3-ClauseSelf-hostable
TypeScriptPHPDartbackendauth
Mattermost icon

Mattermost

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

36.1kMITSelf-hostable
GoTypeScriptReactchatmessaging
Meilisearch icon

Meilisearch

Lightning-fast open source search engine — Algolia alternative

57kMITSelf-hostable
Rustsearchfull-text
n8n icon

n8n

Fair-code workflow automation with 400+ integrations

183kSustainable Use LicenseSelf-hostable
TypeScriptVueNode.jsautomationworkflow
Uptime Kuma icon

Uptime Kuma

Self-hosted monitoring tool with status pages and notifications

84.9kMITSelf-hostable
JavaScriptVueNode.jsmonitoringuptime
PocketBase icon

PocketBase

Open source backend in a single binary — Firebase alternative

57.4kMITSelf-hostable
GoJavaScriptSQLitebackendauth
Apache Superset icon

Apache Superset

Modern data exploration and visualization platform

72.2kApache-2.0Self-hostable
PythonTypeScriptReactbusiness-intelligencedashboards
Vaultwarden icon

Vaultwarden

Lightweight Bitwarden-compatible server in Rust

57.9kAGPL-3.0Self-hostable
Rustpassword-managervault
Syncthing icon

Syncthing

Continuous peer-to-peer file synchronization

81.4kMPL-2.0Self-hostable
Gofile-syncpeer-to-peer
Discourse icon

Discourse

Open source community discussion platform

46.7kGPL-2.0Self-hostable
RubyJavaScriptEmber.jsforumcommunity
NocoDB icon

NocoDB

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

62.6kAGPL-3.0Self-hostable
TypeScriptVueNode.jsdatabasespreadsheet
Keycloak icon

Keycloak

Open source identity and access management — Auth0 alternative

33.7kApache-2.0Self-hostable
JavaJavaScriptidentitysso
Nextcloud icon

Nextcloud

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

34.5kAGPL-3.0Self-hostable
PHPJavaScriptVuefile-storagesync
Plausible Analytics icon

Plausible Analytics

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

24.5kAGPL-3.0Self-hostable
ElixirTypeScriptReactweb-analyticsprivacy
Outline icon

Outline

Beautiful wiki and knowledge base for teams

38kBSD-3-ClauseSelf-hostable
TypeScriptReactNode.jswikiknowledge-base
Bitwarden icon

Bitwarden

Open source password manager with browser extensions and team vaults

18.4kAGPL-3.0Self-hostable
C#.NETTypeScriptpassword-managervault
Coolify icon

Coolify

Open source Heroku/Vercel alternative — self-hosted PaaS

52.6kApache-2.0Self-hostable
PHPLaravelJavaScripthostingpaas
Hoppscotch icon

Hoppscotch

Open source API development ecosystem — Postman alternative

78.8kMITSelf-hostable
TypeScriptVueNuxtapi-clienttesting
Medusa icon

Medusa

Open source headless commerce engine — Shopify alternative

32.6kMITSelf-hostable
TypeScriptNode.jsReacte-commerceheadless
Metabase icon

Metabase

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

46.7kAGPL-3.0Self-hostable
ClojureTypeScriptReactbusiness-intelligencedashboards
Dub icon

Dub

Open source link management — Bitly alternative

23.3kAGPL-3.0Self-hostable
TypeScriptReactNext.jsurl-shortenerlinks
Twenty CRM icon

Twenty CRM

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

43.6kAGPL-3.0Self-hostable
TypeScriptReactNode.jscrmsales
BookStack icon

BookStack

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

18.6kMITSelf-hostable
PHPLaravelJavaScriptwikidocumentation
Jitsi Meet icon

Jitsi Meet

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

28.9kApache-2.0Self-hostable
JavaScriptTypeScriptReactvideo-conferencingmeetings
Bruno icon

Bruno

Fast, Git-friendly API client — Postman alternative

42.6kMIT
JavaScriptReactNode.jsapi-clientgit-friendly
Continue icon

Continue

Open source AI code assistant for VS Code and JetBrains

32.3kApache-2.0Self-hostable
TypeScriptPythonaicode-assistant
Umami icon

Umami

Simple, fast, privacy-focused web analytics

36kMITSelf-hostable
TypeScriptReactNext.jsanalyticsprivacy
Plane icon

Plane

Open source project management for teams

47.3kAGPL-3.0Self-hostable
TypeScriptPythonReactproject-managementissue-tracking
AppFlowy icon

AppFlowy

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

69.1kAGPL-3.0Self-hostable
RustDartFlutternoteswiki
Authentik icon

Authentik

Open source identity provider with modern UI and flows

20.8kMITSelf-hostable
PythonDjangoTypeScriptidentitysso
Dokku icon

Dokku

The smallest PaaS — Heroku alternative with git push deployment

31.9kMITSelf-hostable
ShellGohostingpaas
Chatwoot icon

Chatwoot

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

28.2kMITSelf-hostable
RubyVueJavaScriptcustomer-supportlive-chat
Listmonk icon

Listmonk

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

19.4kAGPL-3.0Self-hostable
GoVueJavaScriptnewsletteremail
Saleor icon

Saleor

Open source headless commerce platform with GraphQL API

22.8kBSD-3-ClauseSelf-hostable
PythonDjangoGraphQLe-commerceheadless
Tabby icon

Tabby

Self-hosted AI coding assistant with local models

33.3kApache-2.0Self-hostable
RustTypeScriptPythonaicode-completion
Wiki.js icon

Wiki.js

Powerful open source wiki engine with visual editor and Git sync

28.1kAGPL-3.0Self-hostable
JavaScriptVueNode.jswikidocumentation
Infisical icon

Infisical

Open source secrets management platform

25.7kMITSelf-hostable
TypeScriptReactNode.jssecretssecurity
Penpot icon

Penpot

Open source design and prototyping platform for cross-domain teams

45.2kMPL-2.0Self-hostable
ClojureClojureScriptdesignprototyping
Typesense icon

Typesense

Fast, typo-tolerant search engine — Algolia alternative

25.5kGPL-3.0Self-hostable
C++searchfull-text
Rocket.Chat icon

Rocket.Chat

Open source team communication platform

45.1kMITSelf-hostable
TypeScriptJavaScriptMeteorchatmessaging
Baserow icon

Baserow

Open source no-code database — Airtable alternative

4.6kMITSelf-hostable
PythonDjangoVueno-codedatabase
Formbricks icon

Formbricks

Open source survey platform — Typeform alternative

12kAGPL-3.0Self-hostable
TypeScriptReactNext.jsformssurveys
Trigger.dev icon

Trigger.dev

Open source background jobs framework for TypeScript

14.4kApache-2.0Self-hostable
TypeScriptReactNode.jsautomationbackground-jobs
Documenso icon

Documenso

Open source DocuSign alternative

12.6kAGPL-3.0Self-hostable
TypeScriptReactNext.jsdocument-signinge-signature
OpenStatus icon

OpenStatus

Open source monitoring and status page platform

8.5kMITSelf-hostable
TypeScriptReactNext.jsmonitoringstatus-page
Lago icon

Lago

Open source metering and usage-based billing

9.5kAGPL-3.0Self-hostable
RubyTypeScriptReactbillingmetering
Highlight.io icon

Highlight.io

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

9.2kApache-2.0Self-hostable
TypeScriptGoReacterror-trackingsession-replay
Focalboard icon

Focalboard

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

26kAGPL-3.0Self-hostable
TypeScriptGoReactkanbanproject-management
Docmost icon

Docmost

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

19.7kAGPL-3.0Self-hostable
TypeScriptReactNode.jswikidocs

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Open Source Axios Alternatives 2026

axios alternative open source: got, ky, undici, wretch, ofetch. The March 2026 supply chain attack put 3M+ weekly downloads at risk. Compare all five today.

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Plane vs Linear vs GitHub Projects vs Jira 2026

Plane vs Linear vs GitHub Projects vs Jira in 2026: pricing breakdown, self-hosting options, and features to help engineering teams pick the right PM tool.

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Best open source alternatives to Cloudinary in 2026. Compare imgproxy, Thumbor, Imagor, libvips, and Uploadcare OSS for self-hosted image optimization.

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Best open source alternatives to Contentful in 2026. Compare Strapi, Payload CMS, Directus, Wagtail, and KeystoneJS headless CMS self-hosting options.

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OSS Crisp Live Chat Alternatives 2026

Best open source alternatives to Crisp live chat in 2026. Chatwoot, Papercups, Typebot, and Chaskiq self-hosted customer support tools compared side-by-side.

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OSS Cursor and Windsurf Alternatives 2026

Best open source alternatives to Cursor and Windsurf AI code editors in 2026. Void, Continue.dev, Aider, Cline, and Tabby features and pricing compared.

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OSS LemonSqueezy Alternatives 2026

Best open source alternatives to LemonSqueezy for 2026. Compare Lago, Kill Bill, Polar, Salable, and Hyperswitch for SaaS and digital product billing.

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OSS Pusher Alternatives 2026

Best open source alternatives to Pusher for real-time WebSockets in 2026. Soketi, Centrifugo, Mercure, and more — each compared with Docker deploy guides.

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OSS SendGrid Alternatives 2026

Best open source alternatives to SendGrid in 2026. Compare Postal, Mailtrain, Listmonk, Cuttlefish, and Haraka for self-hosted transactional email delivery.

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OSS Substack Alternatives 2026

Best open source alternatives to Substack in 2026. Ghost, Listmonk, WriteFreely, Plume, and Mataroa — self-hosted newsletter platforms for indie creators.

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