Open Source Software Catalog

121 programs — free forever, legal to download.

Sort: Popular Recent Stars License: All AGPL-3.0 Apache-2.0 BSD-2-Clause BSD-3-Clause BSD-4-Clause CC0-1.0 EUPL-1.1 EUPL-1.2 GPL-2.0 GPL-3.0 ISC LGPL-2.1 LGPL-3.0 MIT MPL-1.1 MPL-2.0 OSL-3.0 Unlicense Platform: All Linux Windows macOS Docker Web Released: Any 30 days 90 days 1 year Reset filters

Showing 121 programs

Maddy Mail Server GPL-3.0 Email Servers Linux Web v0.9.6 ★ 6,120 Xandikos logo Xandikos Git-backed CardDAV/CalDAV server for self-hosted contacts and calendars GPL-3.0 Calendar & Contacts Web v0.4.10 ★ 612 Mox MIT Email Servers Web v0.0.17 ★ 5,931 Wallabag MIT Archiving Android Web v2.6.0 ★ 592 Haraka MIT Mail Transfer Agents Web v3.4.0 ★ 5,633 Rallly AGPL-3.0 Scheduling Web vuntagged-6490d7892bf741592dba ★ 5,338 WriteFreely AGPL-3.0 Blogging Linux macOS v0.17.2 ★ 5,283 Radicale GPL-3.0 Calendar & Contacts Web v3.9.0 ★ 5,185 ANALOG logo ANALOG Minimal self-hosted event analytics for users running their own infrastructure. MIT Web Analytics Web v0.2.3 ★ 51 Huginn logo Huginn Build agents that read the web, watch events, and act for you on your own server. MIT Automation Web v2026.11.05.2 ★ 50,294 Metabase AGPL-3.0 Web Analytics Web v0.65.2 ★ 50,174 Apache Airflow Apache-2.0 Automation Web v3.3.2 ★ 47,367 Rocket.Chat MIT Messaging Web v8.9.0 ★ 46,372 Easy!Appointments GPL-3.0 Scheduling Web v1.6.1 ★ 4,480 bitmagnet MIT Archiving Android Linux v0.10.0 ★ 4,447 Spectrum 2 GPL-3.0 Messaging Web v2.2.1 ★ 421 NeonLink logo NeonLink Lightweight self-hosted bookmark service for private link organization. MIT Bookmarks Web v1.5.0 ★ 420 Shhh logo Shhh Encrypted secret sharing so sensitive info stays out of emails and chat logs MIT Messaging Web v3.2.4 ★ 420 Hi.Events AGPL-3.0 Scheduling Web v2.0.0 ★ 4,127 Daily Stars Explorer MIT Web Analytics Web v0.1.0 ★ 410 Postiz AGPL-3.0 Web Analytics Web v2.25.3 ★ 40,936 PostHog MIT Web Analytics Linux macOS vdesktop-v0.61.943 ★ 40,651 Umami MIT Web Analytics Web v3.4.1 ★ 39,925 Shaarli logo Shaarli Self-hosted, database-free bookmarking for individuals managing personal links. Unknown Bookmarks Web v0.16.10 ★ 3,918