SCons is a cross-platform build tool. Think of SCons as an improved substitute for the classic Make utility with integrated functionality similar to autoconf/automake and compiler caches such as ccache. Unlike build tools that invent their own mini-language or wedge a scripting language onto some other configuration file syntax, SCons configuration files are actually Python scripts. The ability to script your build gives you a tremendous amount of flexibility to solve complicated build problems in surprisingly small amounts of maintainable code.

Meister is the ultimate tool in Build Management. Meister reduces cost and increases control by simplifying build complexity. Build complexity occurs through uncontrolled scripting, the need for multi-language compiles or agile methods where frequent changes to the build are encouraged. Meister virtualizes builds allowing you to control the mixing and mashing of more build engines, such as MSBuild and Ant, or between the individual build and the team build, resulting in consistent rock solid builds.

sbt is a simple build tool for Scala projects that aims to do the basics well.

PHing Is Not GNU make; it's a project build system based on Apache Ant. You can do anything with it that you could do with a traditional build system like GNU make, and its use of simple XML build files and extensible PHP "task" classes make it an easy-to-use and highly flexible build framework. Features include file transformations (e.g. token replacement, XSLT transformation, Smarty template transformations), file system operations, interactive build support, SQL execution, CVS operations, tools for creating PEAR packages, and much more.

OpenMake Mojo is a FREE Continuous Integration Server with full workflow process automation. Mojo automates, centralizes and accelerates your software development processes from build to release. Workflow hand offs, logs, and reports are centralized across multiple teams and hardware platform. Build to release cycles are accelerated with Mojo's multi step activity synchronization and continuous build support.

APB is a simple, yet powerfull, project build system that inherits some ideas from Ant and Maven while trying to avoid the use of complex XML files to define the metadata of the project.

Buckminster is a set of frameworks and tools for automating build, assemble & deploy (BA&D) development processes in complex or distributed component-based development. Buckminster allows development organizations to define fine-grained "production lines" for the various stages in software production - unit testing, integration testing, field deployment, staged migration, etc. - and to automate the execution of corresponding processes.

DataConstructor is a database build/deploy tool that reconciles the forces of Agility and data preservation. It is based on the .net platform. It supports an agile, test-driven, test-first process by giving you a truly reliable and automated database build process.

Makejs is a command line utility for "building" a javascript heavy html5 applications

SWF2Go is a professional toolkit for Adobe Flash Lite, which allows developers to create Symbian SIS installer and SWF launcher icon for Flash Lite applications. SWF2Go is compatible with all versions of Adobe Flash Lite Player up to v2.1 and with Symbian S60 platform editions 1st, 2nd & 3rd. Thus allowing developers to distribute their Adobe Flash Lite based games and applications to a wide range of mobile devices.