malkriz is solver for the Japanese puzzle, Griddlers. It is written as a set of simple, portable C++ classes, and supports a range of GUI front-ends.
sikakuQt is an implementation of sikaku, which is a Japanese puzzle where you have to mark squares and rectangles around numbered cells to fill all cells on the playing board.
Re: Compilation of net-tools this patch helped me: http://www.bitshrine.org/gpp/net-tools-1.60-2.patch
A C++11 unit testing framework based on Perl's Test::More module.
A tool that records and executes Java GUI-driven acceptance tests.