sigal

939

Photo Galleries

Yet another simple static gallery generator.

pretalx

917

Conference Management

Web-based event management, including running a Call for Papers, reviewing submissions, and scheduling talks.

SolidInvoice

915

Money, Budgeting & Management

Open source invoicing and quote application.

RecipeSage

904

Inventory Management

A recipe keeper, meal plan organizer, and shopping list manager that can import recipes directly from any URL.

DOMJudge

899

Miscellaneous

System for running a programming contest, like the ICPC regional and world championship programming contests.

Espial

892

Bookmarks and Link Sharing

An open-source, web-based bookmarking server.

kiwix-serve

877

Document Management - E-books

HTTP daemon for serving wikis from ZIM files.

Thelia

876

E-commerce

Thelia is an open source and flexible e-commerce solution.

Notifo

875

Communication - Custom Communication Systems

Multichannel notification server with support for Email, Mobile Push, Web Push, SMS, messaging and a javasc…

Textpattern

874

Content Management Systems (CMS)

Flexible, elegant and easy-to-use CMS.

Bencher

861

Software Development - Testing

Suite of continuous benchmarking tools designed to catch performance regressions in CI.

phpList

853

Communication - Email - Mailing Lists and Newsletters

Newsletter and email marketing with advanced management of subscribers, bounces, and plugins.

Concrete 5 CMS

844

Content Management Systems (CMS)

Open source content management system.

Audioserve

839

Media Streaming - Audio Streaming

Simple personal server to serve audio files from directories (audiobooks, music, podcasts...).

Bugzilla

834

Ticketing

General-purpose bugtracker and testing tool originally developed and used by the Mozilla project.

Zero-K

806

Games

Open Source on Springrts engine.

Haven

792

Blogging Platforms

Private blogging system with markdown editing and built in RSS reader.

DDraceNetwork

788

Games

Cooperative platformer version of DDRace, a Teeworlds modification featuring unique cooperative gameplay.

Quassel IRC

784

Communication - IRC

Distributed IRC client, meaning that one (or multiple) client(s) can attach to and detach from a central core.

webtrees

777

Genealogy

Webtrees is the web's leading online collaborative genealogy application.

OTS

765

Communication - Custom Communication Systems

One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser.

DavMail

735

Calendar & Contacts

POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client with an E…

Cockpit

729

Content Management Systems (CMS)

Simple content platform to manage any structured content.

Simple Machines Forum

729

Communication - Social Networks and Forums

Free, professional grade software package that allows you to set up your own online community within minutes.