Apache Ant vs FASTBuild

Apache Ant is a Java library and command-line tool that runs processes described in build files as targets and tasks. Its tasks compile, assemble, test, and run Java applications, and can also build C and C++ projects. Additional built-in coverage handles archiving, file operations, execution, remote access, source control, and testing. Ant does not impose coding conventions or directory layouts on Java projects. Developers can extend it with Antlibs containing tasks and types, while optional Antlibs are distributed separately from the core release. For projects needing dependency management alongside build tooling, the project recommends Apache Ivy. Ant 1.10 requires JDK 8 or later; many tasks will not work with only a JRE. The JUnit task requires external libraries that are not bundled. Ant has been used on Linux, macOS, Windows NT descendants, Unix, and other platforms, with development focused on Linux, macOS, Windows, and Unix. Releases from version 1.6.1 onward use the Apache License, Version 2.0. The listed free plan is Apache Ant 1.10.18, distributed as ZIP, TAR.GZ, and TAR.BZ2 packages. Download guidance includes PGP signature and SHA512 verification.

FASTBuild is an open-source build system for compiling software across Linux, macOS and Windows. It runs compilation work across worker threads, can reuse results from local or network caches, and can distribute builds among networked machines when their settings and worker setup are compatible. The maker says caching can accelerate compile times up to 10x. Some compiler settings do not support caching or distribution; FASTBuild handles affected objects without caching or builds them locally. Supported toolchains include MSVC, GCC, SNC, Clang, GreenHills, CodeWarrior and NVCC, plus syntactically compatible command-line compilers. It can combine C++ files into Unity or Blob builds, while allowing writable files to be built individually for quicker iteration. FASTBuild can generate Visual Studio and XCode project files. The maker describes it as a self-contained executable that needs no installation or dependencies beyond compiler tools. It is free, with commercial use and redistribution allowed under license conditions; the license provides the software without warranty. The listed current release is v1.20, released 26-Apr-2026.