CentralDesktop is a cloud based collaboration platform that was first launched in 2008. While it was one of the cloud collaboration pioneers, its development seems to have stopped several years ago. Both the cloud service interface and its Android app look very outdated. If you are looking for a free CentralDesktop alternative, Bitrix24 makes a perfect choice.
* Please note that the information may have changed since the publication. For current prices and features please visit Bitrix24 pricing page.