Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
imapsync - Console-based utility for migrating IMAP mailboxes.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
audriga Email and Groupware migration - Easily migrate your email, contacts, calendar items and tasks to your new provider or server. No software installation is required.