jsmacro - jsmacro is pre-processor designed for use with JavaScript (where "macro" currently leans more toward the C definition of a macro than the Lisp definition.)
CMake - CMake is an open-source, cross-platform family of tools designed to build, test and package software.
Lerna - Application and Data, Libraries, and Javascript Utilities & Libraries
SCons - SCons is an Open Source software construction toolโthat is, a next-generation build tool.
Sprockets - Sprockets: Rack-based asset packaging.
SBT - SBT is a build tool for Scala, like Ant or Maven but with hieroglyphics.