Notepad++ is a free, open source Windows source code editor and Notepad replacement that does a decent job of editing JavaScript. It also supports about 50 other programming and markup languages.

Ten weeks ago, code-hosting giant GitHub introduced its latest creation: a text editor named Atom.. Now, the company is opening it up to the public after an apparently successful invite-only phase.

Adobe has released version 1.0 of Brackets, its free open-source text editor that's built in HTML, CSS and JavaScript, for coding HTML, CSS and JavaScript.

Windows/Linux: Open-source image editor MyPaint allows you to draw and edit images in fullscreen mode, on a limitless canvas that grows with your image and eliminates pesky scroll bars.

Today, after 10 weeks in public beta, it is making all of the editor available under the MIT open source license, ... To expand Atom, developers only need to know JavaScript and CSS.