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Find Open Source Alternatives

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

80+

Alternatives

25

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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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Gitea vs GitHub: Self-Hosted Git 2026

Gitea vs GitHub self-hosted in 2026: resource usage, CI/CD, and migration steps compared. Gitea runs on 256MB RAM. Full feature matrix and setup guide included.

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Joplin vs Standard Notes vs Notesnook: E2E encryption, self-hosting, sync options, free tier pricing, and which private open-source notes app wins in 2026.

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Open Core vs Source Available: Business Models 2026

Open core vs source available vs true open source: the business models behind OSS companies in 2026, what each means for users, and which models actually work.

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Open source license compliance for legal and engineering teams in 2026. SBOM requirements, license scanning tools, policy templates, and avoiding legal risk.

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Complete Open Source DevOps Stack 2026

The full open source DevOps stack for 2026: self-hosted CI/CD, container orchestration, monitoring, logging, secrets, and IaC tools that replace paid services.

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Open Source Funding Models & Sustainability 2026

How open source projects fund themselves and survive in 2026: donations, open-core, dual licensing, sponsorships, and grants. What actually works.

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Open Source Governance for Maintainers 2026

How open source maintainers govern their projects in 2026: decision-making models, contributor ladders, conflict resolution, and avoiding burnout and capture.

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