At this website you can find handful of online computer utilities which allows you to perform various task without installing any software at your computer apart of the browser. It can be considered as a big utility set for a Internet operating system (like Chrome OS, for example). Utilities provided :
Analyze words, sentences, structure or style of any text
Learn, teach or research English language
Write easily readable texts in English
Perform math calculations (even very powerful!)
Convert various measurement units
Convert images from one format into another
Get keyword suggestions for English language websites
Perform various backlink (inlink, inbound link) analysis
Perform some Internet searches of best websites or best websites in specific category.