CMake - CMake is an open-source, cross-platform family of tools designed to build, test and package software.
MPW Make - Macintosh Programmer's Workshop (MPW) is an open, configurable, and scriptable development environment which provides the flexibility to support complex software development projects
SCons - SCons is an Open Source software construction tool—that is, a next-generation build tool.
SBuild - Other Continuous Delivery
Ninja Build - Ninja is a small build system with a focus on speed.
Meson - Meson is an open source build system meant to be both extremely fast, and, even more importantly...