Open-source projects built with HTML
Open-source and self-hostable projects whose repository uses HTML, as reported by GitHub.
- Syncthing
A continuous file synchronization program that syncs folders directly between your own devices without a central server.
Stars89kLast commitOct 13, 2026LicenseMPL-2.0 - Apache Superset
An open-source data exploration and visualization platform for building charts and dashboards over SQL databases, run by the Apache Software Foundation.
Stars75kLast commitOct 15, 2026LicenseApache-2.0 - Penpot
A browser-based design and prototyping tool where designers and developers work on the same files, with SVG as its native format.
Stars61kLast commitOct 14, 2026LicenseMPL-2.0 - Plane
An open-source project and issue tracker with cycles and modules, built as a Jira alternative.
Stars61kLast commitOct 14, 2026LicenseAGPL-3.0 - Jellyfin
A free, self-hosted media server for streaming your own movies, shows, music, live TV, books and photos to apps on most devices.
Stars58kLast commitOct 14, 2026LicenseGPL-2.0 - Joplin
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.
Stars57kLast commitOct 14, 2026LicenseAGPL-3.0-or-later - ClickHouse
A column-oriented SQL database for real-time analytics, available as open-source software or as the managed ClickHouse Cloud service.
Stars50kLast commitOct 15, 2026LicenseApache-2.0 - 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.
Stars49kLast commitSep 26, 2026LicenseMIT - Discourse
A discussion forum platform for communities that you can install with Docker on your own server or use as official Discourse hosting.
Stars48kLast commitOct 15, 2026LicenseGPL-2.0 - Paperless-ngx
A document management system that turns scanned paper documents into a searchable online archive.
Stars47kLast commitOct 15, 2026LicenseGPL-3.0 - Rocket.Chat
A self-hostable team communications platform with chat, channels, and omnichannel customer messaging.
Stars46kLast commitOct 15, 2026LicenseMIT - Mattermost
A self-hostable team chat platform with channels, threads and integrations, popular for secure and technical teams.
Stars39kLast commitOct 15, 2026LicenseAGPL-3.0 - 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.
Stars39kLast commitOct 14, 2026LicenseZlib - Chatwoot
A customer support inbox that brings live chat, email and social channels into one shared view for support teams.
Stars38kLast commitOct 15, 2026LicenseMIT - Plausible Analytics
Lightweight, cookieless, privacy-focused web analytics with a self-hostable Community Edition.
Stars29kLast commitOct 14, 2026LicenseAGPL-3.0-or-later - Jenkins
A Java-based, self-hosted automation server with a large plugin ecosystem, mostly used to build, test and deploy software.
Stars27kLast commitOct 14, 2026LicenseMIT - Zulip
A self-hostable team chat app that organizes every conversation into topics inside channels.
Stars26kLast commitOct 14, 2026LicenseApache-2.0 - Listmonk
A self-hosted newsletter and mailing list manager that ships as a single binary and uses your own SMTP provider.
Stars24kLast commitOct 15, 2026LicenseAGPL-3.0 - Saleor
A GraphQL-only, API-first commerce platform written in Python and Django for building headless online stores.
Stars23kLast commitOct 14, 2026LicenseBSD-3-Clause - WeKan
An open-source Kanban board with boards, lists, cards, swimlanes and real-time updates that you can host yourself.
Stars21kLast commitOct 15, 2026LicenseMIT - Bitwarden
A password manager with web, desktop, browser, mobile and CLI clients, whose server can be hosted by Bitwarden or run on your own machines with Docker.
Stars20kLast commitOct 15, 2026LicenseAGPL-3.0 - OpenProject
A web-based project management system for classic, agile and hybrid projects, with Gantt charts, boards, time tracking and a work package model.
Stars16kLast commitOct 14, 2026LicenseGPL-3.0 - Stalwart Mail Server
An all-in-one mail and collaboration server written in Rust, with JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV and WebDAV, offered in a free Community edition and a paid Enterprise edition.
Stars15kLast commitOct 14, 2026LicenseAGPL-3.0 - Mautic
An open-source marketing automation platform for email campaigns, landing pages, lead scoring and multichannel messaging that you host yourself.
Stars11kLast commitOct 15, 2026LicenseGPL-3.0-or-later - Frappe HR
An open-source HR and payroll system covering employee records, leave, attendance, expenses, appraisals and payroll, built on the Frappe Framework.
Stars8.9kLast commitOct 14, 2026LicenseGPL-3.0 - Roundcube
A browser-based, multilingual IMAP webmail client written in PHP that you host in front of your own mail server.
Stars7.2kLast commitOct 13, 2026LicenseGPL-3.0-or-later - Canvas LMS
A learning management system developed by Instructure, released under AGPL-3.0 for self-hosting.
Stars6.9kLast commitApr 30, 2026LicenseAGPL-3.0 - Zammad
A web-based helpdesk and ticketing system that handles email, chat, phone and social channels in one place.
Stars6.0kLast commitOct 14, 2026LicenseAGPL-3.0 - LimeSurvey
A PHP survey platform with conditional logic, multilingual surveys and a remote-control API, available self-hosted or as a paid cloud service.
Stars3.8kLast commitOct 14, 2026LicenseGPL-2.0-or-later - Keila
An open-source newsletter tool for sending campaigns and building sign-up forms, which you can self-host or use as a paid cloud service.
Stars2.2kLast commitOct 2, 2026LicenseAGPL-3.0-or-later - 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.
Stars286Last commitOct 14, 2026LicenseAGPL-3.0
