Kanakku is a Spreadsheet and Calculator rolled into one web application. The application is free to use and currently runs well on IE7+ and Firefox.
You can use the application in a variety of ways. Spreadsheets, mathematical formulas can be written in each cell. These formulas can be evaluated by pressing the enter key. The corresponding answer to the formula will be displayed to you. Simply select the function keys of Kanakku in order to use the type of formula that you need. As of now, Kanakku can handle arithmetic, trigonometric and statistical functions.
You do not need to sign up for the service. You can immediately open your file (currently .csv) in Kanakku and save it in the same format when you’re done. If you’re looking for a free web alternative to desktop spreadsheet applications, Kanakku is one of them. Give it a shot and see if it works well for you.
Watch the Kanakku video tutorial: