darktable

darktable is an open source photography workflow application and raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them...
Language(s): C, GTK+
Operating system(s): FreeBSD, Linux, Mac OS, Solaris, Windows
License: GNU General Public License 3 or later.

digiKam

digiKam is an advanced open-source digital photo management application that runs on Linux, Windows, and MacOS. The application provides a comprehensive set of tools for importing, managing, editing, ...
Language(s): C++, QT
Operating system(s): Linux, Windows, Mac OS
License: GNU General Public License

eSpeakNG

The eSpeak NG (Next Generation) Text-to-Speech program is an open source speech synthesizer that supports 102 languages and accents, based on the eSpeak engine created by Jonathan Duddington. It suppo...
Language(s): C
Operating system(s): Linux, Windows, Mac OS X, FreeBSD
License: GNU GPL v3+

gnuplot

Gnuplot is a portable command-line driven graphing utility for Linux, OS/2, MS Windows, OSX, VMS, and many other platforms. The source code is copyrighted but freely distributed (i.e., you don't have ...
Language(s): C
Operating system(s): Linux, OS/2, MS Windows, OSX, VMS and more.
License: Gnuplot license

iDempiere

iDempiere Business Suite ERP/CRM/SCM done the community way. Focus is on the Community that includes Subject Matter Specialists, Implementors and End-Users. iDempiere is based on original Compiere/...
Language(s): Java
Operating system(s): Linux, Windows
License: GNU General Public License, version 2