Social Source Commons

Rich client application for editing a full range of web content, from simple HTML pages to PHP and other dynamic content formats

Peer-to-peer collaborative editing/coding over TCP/IP or local networks for Mac users.

Powerful but expensive digital image manipulation package.

BBEdit is a professional HTML and text editor for the Macintosh. Primarily geared towards Web authors and software developers, BBedit provides an abundance of features for editing, searching, and text manipulation, including syntax coloring, regular expre

gedit is the official text editor of the GNOME desktop environment.

Crimson Editor is a professional source code editor for Windows.

An improved version of the vi editor

Smultron is a text editor written in Cocoa for Mac OS X 10.4 Tiger or later

Full-screen text editor.

Text-editor for Windows

Dynamic HTML Editor is a graphical WYSIWYG editor for WEB pages

Java based text editor, with syntax highliting and other great features

Text Editor

Cinelerra is a highly advanced and professional opensource video editing.

Open sourced programmer's editor for scripting languages, features some IDE abilities.

Background syntax checking and syntax coloring catch errors immediately, while autocomplete and calltips guide you as you write. Available on Windows, Mac OS X and Linux.

TinyMCE is a platform independent web based Javascript HTML WYSIWYG editor

Support for editing, managing, enhancing, and sharing photos. Includes tools for photo corrections, retouching, and color correction. Common editing tasks can be recorded and used on multiple photos. Also includes set of drawing and painting tools.

Amaya is a Web editor, i.e. a tool used to create and update documents directly on the Web. Browsing features are seamlessly integrated with the editing and remote access features in a uniform environment. This follows the original vision of the Web as a space for collaboration and not just a one-way publishing medium.

FlashDevelop is a .NET open source script editor designed mostly for Actionscript 2/3 development. FlashDevelop is very quick to setup and easy to use as an external editor for the Flash IDE or as a complete open source development environment.

Powerful text editor for Windows which allows for UNIX-type scripting commands.

Image browser, converter, and editor.

An Open Source, self hosted web office.

Hosted image editor that supports multiple layers, has photo managing features and allows you to work with shared photos from sites like Flickr and Facebook.

Free basic online video editor

Aviary is a suite of free image markup tools, such as an effects editor, screen capture and editor and others. Aviary also offers a Firefox extension for online screen capture.

MachForm is a browser based, self-hosted HTML form builder program.

Full-featured open source video editor

JOSM is the "Java OpenStreetMap Editor", a desktop application originally developed by Immanuel Scholz and currently maintained by Dirk Stöcker. Currently it supports loading stand alone GPX tracks and GPX track data from the OSM database as well as loading and editing existing nodes, ways, metadata tags and relations from the OSM database.

A online, free, no registration requirement, photo editing tool.