xmake is a cross-platform build utility based on Lua. The project focuses on making development and building easier and provides many features (e.g package, install, plugin, macro, action, option, task ...
Reggae is a (meta) build system with multiple front (D, Python, Ruby, Javascript, Lua) and backends (make, ninja, tup, custom). This is alpha software, only tested on Linux and likely to have breaking changes made.
Werk is a command runner and simplistic build system. It is intended to supplant Make in projects that need a simple build tool adjacent to a main build system, such as Cargo or NPM.
autosetup is a tool, similar to autoconf, to configure a build system for the appropriate environment, according to the system capabilities and the user-selected options.