Make Tools

A-A-P - Open Source - A-A-P is an experimental make tool. Features include a special AAP makefile syntax, automated dependency support for Unix C programs, and a GUI interface written in Python.
www.a-a-p.org/

Boost Build - Freeware - A Make replacement with a simple and high-level target language. It supports build variants, and several different compilers and tools.
boost.sourceforge.net/boost-build2/

Build - Open Source - A software build system implemented on top of GNU make featuring position-independent non-recursive multi-makefile include-based structure, complete inter-project dependency tracking, and extensible translator framework.
kolpackov.net/projects/build/

Cons - Freeware - A make replacement written in Perl featuring MD5 file content and build signatures, dependency scanning, viewpathing for source and derived files, multidirectory builds, and Perl build actions.
www.dsmit.com/cons

Cook - Freeware - A make replacement featuring file fingerprints, dependency scanning, viewpathing, parallel threads, distributed rsh builds, cross compiling, and build actions in the "cook" description language.
miller.emu.id.au/pmiller/software/cook/

ElectricAccelerator - Electric Cloud - A make replacement that distributes builds across multiple cluster machines for faster builds. Features automatic code dependency detection (and correction in some cases), and plug-compatibility with GNU Make and Nmake.
www.electric-cloud.com

GNU Make - Freeware - A make program featuring pattern-matched viewpaths, parallel threads, multiple platforms, conditional directives, makefile regeneration, and an advanced Make description language.
www.gnu.org/software/make/make.html

Jam - Freeware - A make replacement featuring dependency scanning, per-target viewpathing, parallel threads, multiple platforms, variant builds, and control flow statements in the Jam description language.
www.perforce.com/perforce/loadsupp.html

Jmk - Freeware - A make program written in Java, featuring a traditional make description language and shell command target actions.
sourceforge.net/projects/jmk

KJam - A make replacement based on Jam, with more powerful features than the original Jam. Features dependency scanning, per-target viewpathing, and control flow. Distributes builds across multiple cluster machines for faster builds.
www.oroboro.com/kjam/docserv.php

NAnt - Freeware - Not Ant is like Ant, but uses C# and .NET technologies.
nant.sourceforge.net/

Nmake - Lucent - Features dependency scanning, viewpaths, parallel and distributed rsh execution, a coshell, compiled makefiles, C preprocessor, variable editing, and a powerful Make rule language.
www.bell-labs.com/project/nmake

Odin - Freeware - A make replacement featuring dependency scanning, viewpaths, distributed rsh execution, cached derived files, variant builds, conditional directives, and an Odin rule language.
http://tylerschnaidt.com/blocked/nph-index.pl/010110A/ftp/ftp.cs.colorado.edu/pub/distribs/odin

Opus Make - Opus - A multiplatform make featuring dependency scanning, suffix-specific viewpaths, extended command and macro modifiers, CPP preprocessor directives, and iterators in the Make rule language.
www.opussoftware.com

PBS - Open Source - A Make replacement written in Perl featuring hierarchical builds, dependency graph node triggers, no built in rules, PBS/Perl syntax for PBSfiles, a Perl API for the system, and shell or Perl build actions.
search.cpan.org/~nkh/

PVM GNU Make - Freeware - A modified GNU make that uses the Oakridge PVM Parallel Virtual Machine to perform parallel distributed builds.
sourceforge.net/projects/pvmgmake

SCons - Freeware - A make replacement like Cons, written in Python and featuring MD5 file signatures, dependency scanning, parallel build threads, viewpathing, multidirectory builds, and Python build actions.
www.scons.org

Sham - Freeware - A tiny command-line prefix tool that can track dependencies for a file automatically without the need for a Makefile.
sham.sourceforge.net/

SMK - Freeware - A make replacement, written in Python featuring global dependencies view, extensible dependency scanning, parallel build threads, multidirectory builds, automatic cleaning and extensibility via Python classes.
home.gna.org/smk/

TrMake - Open Source - A modular makefile system for multi-platform C++ development in Unix environment using GNU make 3.80 or higher, featuring modular makefiles and transparent handling of dependencies and sources of multiple projects.
www.cs.bgu.ac.il/~orlovm/code/trmake/