A curated list of awesome live and in use web apps with open-sourced code. Learn from & contribute to them!
- Name <URL> - <Repo URL> (<Stack>) <Description>
- Adventar https://adventar.org/ - adventar/adventar (JavaScript, Vue, Go, TypeScript) Adventar is a service to host "Advent Calendar"-style blogging events.
- Cal.com https://cal.com - calcom/cal.com (TypeScript, Next.js, Prisma) Open scheduling platform (Calendly alternative) with hosted service.
- HedgeDoc / CodiMD (formerly HackMD) https://hackmd.io/ https://demo.hedgedoc.org/ - hackmdio/codimd hedgedoc/hedgedoc (JavaScript) HedgeDoc / CodiMD (formerly known as HackMD) is a realtime collaborative markdown note-taking app on all platforms.
- CyberChef https://gchq.github.io/CyberChef/ - gchq/CyberChef (JavaScript) The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis.
- Dev.to https://dev.to/ - thepracticaldev/dev.to (Ruby, JavaScript) dev.to (or just DEV) is a platform where software developers write articles, take part in discussions, and build their professional profiles.
- diagrams.net (draw.io) https://app.diagrams.net/ - jgraph/drawio (TypeScript, JavaScript) Diagramming and whiteboarding web app with broad format support.
- Dillinger https://dillinger.io/ - joemccann/dillinger (JavaScript) Dillinger is a cloud-enabled, mobile-ready, offline-storage, AngularJS powered HTML5 Markdown editor.
- Discourse https://try.discourse.org - discourse/discourse (Ruby on Rails, Ember.js) Modern discussion forum platform powering many large communities.
- Etherpad https://etherpad.org - ether/etherpad-lite (Node.js, JavaScript) Real-time collaborative text editor with a plugin ecosystem.
- Ghost https://ghost.org/ - TryGhost/Ghost (JavaScript) Ghost is a headless Node.js CMS for professional publishing.
- GitLab https://about.gitlab.com/ - gitlab-org/gitlab (Ruby, JavaScript, Vue) GitLab is an open source end-to-end software development platform with built-in version control, issue tracking, code review, CI/CD, and more.
- Jitsi Meet https://jitsi.org/jitsi-meet/ - jitsi/jitsi-meet (JavaScript, Java) An open-source (Apache) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, secure and scalable video conferences.
- Libraries.io https://libraries.io/ - librariesio/libraries.io (Ruby on Rails, JavaScript) Libraries.io helps developers find new open source libraries, modules and frameworks and keep track of ones they depend upon.
- Lemmy https://join-lemmy.org - LemmyNet/lemmy (Rust, Actix Web, TypeScript) Federated link aggregator (Reddit-like) for the Fediverse.
- Mastodon https://mastodon.social - mastodon/mastodon (Ruby on Rails, React, JavaScript) Federated social network with Twitter-like timelines and features.
- Mattermost https://community.mattermost.com/ - mattermost/mattermost (Go, React, TypeScript) Open-source Slack alternative for team chat and collaboration.
- Nextcloud https://nextcloud.com - nextcloud/server (PHP, JavaScript, Vue) Self-hosted file sync, collaboration and communication platform.
- Outline https://www.getoutline.com - outline/outline (Node.js, Koa, React, TypeScript) Team knowledge base/wiki with rich editor and SSO integrations.
- ownCloud https://owncloud.org/ - owncloud/core (PHP, JavaScript) A software for cloud-based collaboration platforms.
- Penpot https://penpot.app - penpot/penpot (Clojure, ClojureScript) Open-source design and prototyping tool for product teams.
- Pixelfed https://pixelfed.social - pixelfed/pixelfed (PHP, Laravel, Vue.js) Federated, privacy-focused photo sharing platform.
- Plausible Analytics https://plausible.io - plausible/analytics (Elixir, Phoenix, JavaScript) Privacy-focused, lightweight web analytics with a hosted cloud.
- Repology https://repology.org/ - repology/repology-webapp (Python) Repology is a service which monitors a lot of package repositories and other sources and aggregates data on software package versions, reporting new releases and packaging problems.
- Sentry https://sentry.io - getsentry/sentry (Python, Django, TypeScript, React) Application monitoring platform for error tracking and performance.
- Supabase Studio https://app.supabase.com - supabase/supabase (TypeScript, React, Next.js) Open-source Firebase alternative; Studio is the web console for projects.
- WordPress https://wordpress.org/ - WordPress/WordPress (PHP, JavaScript) A software for creating a beautiful website, blog, or app.
- Zulip https://zulip.com - zulip/zulip (Python, Django, TypeScript, React) Threaded team chat combining email-style topics with real-time chat.
- Coderwall https://coderwall.com - coderwall/coderwall-next (Ruby, JavaScript, CoffeeScript) Coderwall is a developer community used by nearly half a million developers each month to learn and share programming tips.
- npm trends https://www.npmtrends.com/ - johnmpotter/npm-trends (Ruby, JavaScript) An app for NPM package comparison.
- StackEdit https://stackedit.io/ - benweet/stackedit (JavaScript, Vue) Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
- unicodeveloper/awesome-opensource-apps: An awesome curated list of open source crafted web & mobile applications.