RabbitMQ - RabbitMQ is an open source message broker software.
AkrutoSync - Sync your Outlook contacts, calendar, tasks and notes on your PC direct with your phone via Wi-Fi or a cellular network.Buy · FAQ · Contact Us · SupportPeople also askWhat is Akrutosync?
AWS Organizations - AWS Organizations from Amazon Web Services (AWS)
DAVx5 - DAVx5 is a CalDAV/CardDAV management and sync app for Android.
Apache ActiveMQ - Apache ActiveMQ is an open source messaging and integration patterns server.
EteSync - Secure, end-to-end encrypted and journaled personal information synchronization.