Open-source projects built with CSS

Open WebUI

A self-hosted AI chat interface for local and cloud models, with multi-user access control.

Supabase

A Postgres-based backend platform that bundles a database, auth, auto-generated APIs, storage, realtime and edge functions, available hosted or self-hosted.

A PDF editor and processor with many tools that runs in the browser, on the desktop or on your own server.

A continuous file synchronization program that syncs folders directly between your own devices without a central server.

AnythingLLM

An app for chatting with your documents using any LLM and vector database, available as a desktop app or a multi-user Docker server.

Coolify

A platform for deploying applications, databases and services on your own servers over SSH.

PocketBase

An open-source backend in a single executable with an embedded SQLite database, realtime subscriptions, user auth, file storage and an admin dashboard.

Gitea

A lightweight self-hosted Git service with issues, pull requests, a package registry and built-in CI (Gitea Actions).

A note-taking app for desktop, mobile and terminal that syncs through your own storage or a Joplin server, with optional end-to-end encryption. The Joplin Server for self-hosted sync is under a separate personal-use license and is not open source.

Ghost

A publishing platform for blogs, newsletters and paid memberships, which you can self-host or use as the managed Ghost(Pro) service.

Metabase

A business intelligence tool where people ask questions of their databases through a query builder or SQL and build dashboards.

Cal.diy

The open-source community edition of Cal.com: a scheduling and booking-page tool you can self-host. It is MIT licensed; Cal.com itself has been closed source since April 2026.

Payload

A TypeScript CMS and application framework that runs inside Next.js and generates an admin panel and APIs from one config.

Logseq

A privacy-first, open-source knowledge base and outliner that stores notes locally and links them with [[backlinks]].

PhotoPrism

A self-hosted photo library that uses AI-based tagging and face and place recognition to browse and search your pictures and videos.

Portainer

A web UI for managing containers on Docker, Swarm, Podman, Kubernetes and ACI, offered as a free Community Edition and a paid Business Edition.

Actual Budget

A local-first personal finance and envelope budgeting app that you can self-host, with optional sync across devices.

Zulip

A self-hostable team chat app that organizes every conversation into topics inside channels.

authentik

A self-hosted identity provider that offers SSO with OIDC, SAML, LDAP, SCIM, RADIUS and a reverse proxy.

Listmonk

A self-hosted newsletter and mailing list manager that ships as a single binary and uses your own SMTP provider.

Docmost

An open-source collaborative wiki and documentation tool with real-time editing, spaces, groups and page history.

WeKan

An open-source Kanban board with boards, lists, cards, swimlanes and real-time updates that you can host yourself.

mailcow

A Docker-based mail server suite that bundles Postfix, Dovecot, Rspamd, SOGo webmail and a web admin interface.

Mautic

An open-source marketing automation platform for email campaigns, landing pages, lead scoring and multichannel messaging that you host yourself.

diagrams.net (draw.io)

A diagramming tool for flowcharts, network and UML diagrams that runs in the browser or as a desktop app and lets you choose where files are stored.

Woodpecker CI

A lightweight, container-based CI/CD engine that you host yourself and connect to your Git forge.

A learning management system for schools, universities and companies that you run on your own web server or use through MoodleCloud.

LimeSurvey

A PHP survey platform with conditional logic, multilingual surveys and a remote-control API, available self-hosted or as a paid cloud service.

SuiteCRM

An open-source CRM for sales, marketing and customer service that you host on your own PHP and MySQL-compatible stack, maintained as two lines: SuiteCRM 7 and SuiteCRM 8.