gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.
Run Windows applications on Linux, BSD, Solaris, and Mac OS X
Wine is an Open Source implementation of the Windows API on top of X and Unix. Wine provides both a development toolkit for porting Windows sources to Unix and a program loader, allowing many unmodified Windows binaries to run on x86-based Unixes.
The Free / Libre / Open Source Web App with the most built-in features
"Software made the wiki way" A full-featured, web-based, multilingual (40+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware, Free Source Software (GNU/LGPL), using PHP, MySQL, Zend Framework, jQuery and Smarty. Tiki can be used to create all kinds of Web applications, sites, portals, knowledge base, intranets, and extranets. Tiki is the Open Source Web Application with the most built-in features. Highly configurable and modular, all features are optional and administered via a web-based interface. Major features include a wiki engine, news articles, discussion forums, newsletters, blogs, file galleries, bug and issue trackers (form generator), polls/surveys and quizzes, banner management system, calendar, maps, mobile , RSS feeds, category system, tags, an advanced themeing engine, spreadsheet, drawings, inter-user messaging, menus, advanced permission system for users and groups, search engine, external authentication, etc. Security reports: firstname.lastname@example.org
Windows port of Glade 3. The latest version includes a stand-alone installer with bundled GTK+ 2.16.0 and libxml 2.7.3. Extra installers or zip files are not required. No changes to the Glade source were required to compile under mingw.
General purpose tile map editor
Tiled is a general purpose tile map editor, built to be flexible and easy to use. In addition to its own map format, Tiled supports read/write plugins for using it with proprietary map formats or formats used by other editors.
The Smart Common Input Method platform (SCIM), is an input method platform supporting more than thirty languages (CJK and many European languages) for POSIX-style operating systems including Linux and BSD.
KCFinder is an alternative to the CKFinder web file manager. It can be integrated into FCKeditor, CKEditor, and TinyMCE WYSIWYG web editors to upload and manage images, flash movies, and other files that can be embedded in generated HTML content.
Addons for any applications supporting the extension mechanism introduced by Mozilla products: Firefox, Thunderbird, Komodo, NVU, Mozilla Suite
Dr. DivX 2.0; officially the unofficial DivX encoding tool to create DivX Media Format files for playback on DivX hardware and software players.
GOK is an on-screen keyboard. An alternative to the mouse/keyboard input system (for unix-like systems with GNOME libraries.)
MATE Desktop Environment, a non-intuitive and unattractive desktop for users, using traditional computing desktop metaphor. Also known as the GNOME2 fork.
Internet - Multi Server Control Panel
i-MSCP (internet Multi Server Control Panel) is an open-source project which allows the management of shared hosting environments on Linux servers. i-MSCP aims to provide an easy-to-use Web interface for end-users (administrators, resellers and clients) and to manage servers without any manual intervention on the filesystem.
Self Service Business Intelligence, Analytics & Performance Management
Jedox is the fastest Open-Source BI solution for Performance Management including Planning, Analysis, Reporting and ETL. The Open Core consist of an in-memory OLAP Server, ETL Server and OLAP client libraries.