Lua FLTK is a binding of the FLTK widget set (www.fltk.org) to the language Lua (www.lua.org). It tries to make the use of FLTK widgets seem natural to Lua programmers. It uses a simple constructor syntax, remaps C++ values onto Lua conventions, and provides direct set/get access to widget properties.
MultiVideo is an image sequence viewer that is targeted to researchers in the image processing field. It features the ability to display several sequences simultaneously in multiple synchronized views, supports many sequence formats, (including formats without compression that are very useful for researchers), displays very long image sequences without loading them in memory, and runs on multiple platforms thanks to the wxWindows library.
X-Launch is a GTK based skinnable run dialog. It has bash style autocompletion, skin support, and animations to let you know when a slow application is launching. It can function like other run dialogs, but you can also tell it to stay resident in memory and hide itself after it launches an application.