Open Source Software Catalog

488 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

Showing 488 programs

GoatCounter Unknown Web Analytics Linux Web v2.7.0 ★ 6,137 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 Conduit Apache-2.0 Messaging ★ 603 Koha GPL-3.0 Integrated Library Systems (ILS) ★ 598 Mox MIT Email Servers Web v0.0.17 ★ 5,931 Wallabag MIT Archiving Android Web v2.6.0 ★ 592 Bolt CMS MIT Content Management Systems (CMS) v6.1.10 ★ 592 InvenioRDM ★ 58 plugNmeet MIT Video Conferencing v2.5.7 ★ 578 RSS Monster logo RSS Monster Self-hosted RSS reader for people who want organized, explainable reading views MIT Feed Readers v2.3.0 ★ 574 Haraka MIT Mail Transfer Agents Web v3.4.0 ★ 5,633 reader logo reader Python feed library for developers building custom feed reader apps BSD-3-Clause Feed Readers v3.27 ★ 560 juntagrico LGPL-3.0 Community-Supported Agriculture (CSA) v2.0.10 ★ 55 Solidus BSD-3-Clause E-commerce vsolidus_admin/v0.5.1 ★ 5,347 Rallly AGPL-3.0 Scheduling Web vuntagged-6490d7892bf741592dba ★ 5,338 UnrealIRCd IRC server for chat networks; target audience not identified. GPL-2.0 IRC ★ 529 WriteFreely AGPL-3.0 Blogging Linux macOS v0.17.2 ★ 5,283 Umbraco MIT Content Management Systems (CMS) vrelease-18.3.1 ★ 5,280 Radicale GPL-3.0 Calendar & Contacts Web v3.9.0 ★ 5,185 Joomla! GPL-2.0 Content Management Systems (CMS) v6.2.0 ★ 5,165 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