The goal of pychess, is to provide a fully featured, nice looking, easy to use chess client for the gnome-desktop.

Nautilus Dropbox is an extension that integrates the Dropbox web service with your GNOME Desktop.

Qt Creator is a cross-platform integrated development environment (IDE) designed to make development with the Qt application framework faster and easier.

MATE Power Manager is a session daemon for the MATE desktop that takes care of system or desktop events related to power, and triggers actions accordingly. Its philosophy is to completely hide these complex tasks and only show some settings important to the user.

Scratch is an easy, interactive, collaborative programming environment designed for creation of interactive stories, animations, games, music, and art -- and sharing these on the web. Scratch is designed to help young people (ages 8 and up) develop 21st century learning skills. As they create Scratch projects, young people learn important mathematical and computational ideas, while also gaining a deeper understanding of the process of design.

xiterm+thai is an X terminal emulator program with Thai language support. It has built-in Thai keyboard input support. You could also use the X11 XKB extension to input Thai characters.