Windows/Mac/Linux/Android: One of Microsoft Office 365 program's chief advantages over open source alternatives is the ability to sync documents via the cloud so that you can edit them everywhere. Open365 has stepped up to finally match this feature set. Open365 works a lot like Office 365 does. The suite builds on LibreOffice Online to let you open your documents in the browser, or use any of the client apps for Windows, Mac, Linux and Android to open them. Open365 also gives you 20GB of cloud-based storage to store your files on that will be synced across your devices.
Currently, the service is in beta, however the developers also plan to release tools to allow you to host your own servers. This helps it stand out from services like Office 365 and Google Docs by giving you a comparable feature set without sacrificing control of your data.