http://www.naviter.com/products/seeyou/

The latest version of SeeYou is 6.03:

www.naviter.com/products/seeyou/seeyou-change-log/?version=5.43

Version 6.03

+ Registration through SeeYou Cloud – like Android and iOS

+ Hints, tips and other warnings will now appear unobtrusively in the tray

+ Anti-alias for airspace and waypoints

+ Waypoints are now displayed with outlined fonts

+ SeeYou Competition can evaluate task stored in IGC file

- Bug fix: Upload in SeeYou Competition sometimes uploaded all files

- Many performance improvements

- Bug fixes

Many significant improvements for SeeYou are on the way although not yet
prominently visible in this version.

After your install SeeYou 6.03, registration of SeeYou has become as simple as it
gets. All you need to do is use your email address to login to SeeYou Cloud from
within the SeeYou registration dialog (Help > Registration). Everything else is
automatic and will work cross-platform on your Windows, iOS, Android and Mac
computers. After you install SeeYou 6 it should register to the new system
automatically.