Lunch Money - A personal budgeting tool with multi-currency support
CMake - CMake is an open-source, cross-platform family of tools designed to build, test and package software.
Wallet - Wallet is the simplest and easiest way to keep track of and secure your most sensitive information.
SCons - SCons is an Open Source software construction tool—that is, a next-generation build tool.
Actual Budget - Robust and simple budgeting that works
Ninja Build - Ninja is a small build system with a focus on speed.