Open Source Software Catalog

86 programs — free forever, legal to download.

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Showing 86 programs

kiwix-serve logo kiwix-serve Local HTTP access to ZIM files for users of offline Kiwix content. GPL-3.0 E-books v3.8.2 ★ 988 Tox GPL-3.0 Messaging ★ 8,743 LibreBooking GPL-3.0 Scheduling Web v7.2.0 ★ 844 Servas logo Servas Self-hosted bookmark management for individuals and multi-user setups GPL-3.0 Bookmarks Web v1.1.3 ★ 839 Exim GPL-3.0 Mail Transfer Agents ★ 785 Discount Bandit GPL-3.0 Automation Web v-4.0.5 ★ 762 Roundcube GPL-3.0 Webmail Clients Web v1.7.5 ★ 7,257 Buku logo Buku Command-line bookmark management for users who want private, portable storage. GPL-3.0 Bookmarks Web v5.1 ★ 7,247 EmailRelay GPL-3.0 Mail Transfer Agents ★ 7 Calibre Web Automated logo Calibre Web Automated Self-hosted ebook library for readers who want Calibre features in a web UI. GPL-3.0 E-books v4.0.8 ★ 6,562 Manage My Damn Life GPL-3.0 Calendar & Contacts Web v0.10.0 ★ 644 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 Koha GPL-3.0 Integrated Library Systems (ILS) ★ 598 Radicale GPL-3.0 Calendar & Contacts Web v3.9.0 ★ 5,185 GNUnet GPL-3.0 Messaging ★ 45 Easy!Appointments GPL-3.0 Scheduling Web v1.6.1 ★ 4,480 Spectrum 2 GPL-3.0 Messaging Web v2.2.1 ★ 421 LazyLibrarian GPL-3.0 Automation ★ 400 Pimcore GPL-3.0 Content Management Systems (CMS) v2026.3.4 ★ 3,889 Weechat GPL-3.0 IRC Web v4.10.2 ★ 3,422 Baïkal GPL-3.0 Calendar & Contacts Web v0.13.0 ★ 3,366 LinkAce GPL-3.0 Bookmarks Web v2.6.3 ★ 3,352 Simple NixOS Mailserver GPL-3.0 Email Servers v2.3.0 ★ 321