Funambol - Funambol is the leading provider of platforms that power many cloud services.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Memotoo - Memotoo allows you to sync your data (contacts, calendar, tasks, .) with phones (iPhone, Android, Samsung, ..
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
BirdieSync - Synchronize your Android, Pocket PC, or iPhone with Thunderbird and Sunbird
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.