While unlikely to supplant Photoshop, Sumopaint is a surprisingly smooth and powerful image editor. Unlike Photoshop, Sumopaint operates in your browser. Powered by Flash, the program sports many of the same tools as Photoshop. The program also supports layers and filters. The filters are available only if you pay a one-off fee, and for slightly more, users can download an offline app version. The interface is very clean and professional. Now to search for a browser based image editor that runs on html5...
Cooliris
When installed in your browser, Cooliris converts a standard image search session into a rather more attractive (and possibly more useful) slide show. Google, Bing, Picasa and Flickr image searches are supported (among others). If nothing else, it can make a prosaic image search into a more interactive and almost three dimensional affair.
Capture Your Screen
The Windows screen capture feature is effective but pretty basic — dumping the display into memory, available for paste into image editing software. Google has released a free extension for its Chrome browser that gives finer grained control over snapshots of browser windows. Once installed, users can select a user-defined area, the entire window or the active area, and define shortcuts that invoke the various options.