Open Source Online HTML Editor: Xinha
Xinha is a powerful & open source HTML (WYSIWYG) editor that works in all current browsers. Its configurabilty and extensibility make it easy to build just the right editor for multiple purposes, from a restricted mini-editor for one database field to a full-fledged website editor. Its liberal, BSD licence makes it an ideal candidate for integration into any kind of project.
It is a community-built script presenting various options for max. customization.
Do you like Photoshop? No enough money to buy it for all your computers! Try Splashup, on line image editor, formerly Fauxto, is a powerful editing tool and photo manager. With all the features professionals use and novices want, it’s easy to use, works in real-time and allows you to edit many images at once. Splashup runs in all browsers, integrates seamlessly with top photosharing sites, and even has its own file format so you can save your work in progress.
WinMerge is an Open Source (GPL) visual text file differencing and merging tool for Windows. It is highly useful for determing what has changed between project versions, and then merging changes between versions.
Microsoft released a free desktop application that simplifies the process of publishing content to your weblog. Whether you are using WordPress, Moveable Type or even blog hosters, you can prepare, preview and publish your content with Windows Live Writer without using your weblog-engine. Features: WYSIWIG-Editor, powerful editing features and offline editing. Beta, for Windows XP with Service Pack 2 or Windows Vista. Various plugins can extend the functionality of the tool.