HoDoKu - HoDoKu is a sudoku helper written in Java and available in English and German.
AfterShip - AfterShip is the shipment tracking API for ecommerce businesses and marketplaces.
Yasminoku - Sudoku game and solver totally written in DHTML.
TrackChecker Mobile - TrackChecker Mobile app features tracking of parcels and online orders, so users don’t have to worry about losing a package by tracking the parcel right on their mobile phone screen.
Simple Sudoku - Freeware Sudoku Puzzle Maker and Solver
Track24 - Track24 app assists you in tracking the packages of more than 600 international courier and postal services from all around the globe.