As the name suggests is a powerful editing program which is excellently designed.
An excellent free tool to help programmers to write and edit their code.
Notepad X is an open source text editor intended to replace the Windows Notepad.
Open Source Geospatial Foundation
MapGuide Open Source is a platform for developing web mapping applications.
W Bruce Dodson
SciTE is a handy small-footprint source code editor.
Classical Text Editor is a professional word processor tool.
XEmacs Development Team
XEmacs is a highly customizable open source text editor.
AeroNotes is an open source text editor for Windows computers.
gedit is a simple, lightweight, open-source text editor.
Open source text and code editor for designing web applications.
Open Paint is an open source image editor for all major operating systems.
FlashDevelop is an open source code editor for ActionScript and Haxe development.
Rodrigo Braz Monteiro, Niels Martin Hansen, Thomas Goyne
High-end open-source subititle editor and creator for all popular types.
FreePCB is a free, open-source PCB editor for Microsoft Windows.
Jahshaka is an advanced, powerful and open source video editor.
GNU General Public License
Feed Launch .NET is an open-source feed editor for RSS 2.0 and ATOM 1.0 Feeds.