instmake allows you to instrument builds with GNU Make and then analyze what happened during those builds. It saves a very detailed build log and has reports to analyze those records. The reports provide you better insight into the build, allow you to find race conditions, and to analyze the parallelism of the build.
The maven-buildmetadata-plugin is a Maven 2 plugin that helps you easily add build metadata to generated archive artifacts. When a product is running on an application server, this tool can tell you which version of which artifact is currently running on that server, which artifact maps to which source code version in the SCM repository, what configuration set (including profiles and environment variables) has been used to generate the artifact, on which machine was the artifact built, and when was the artifact built. The provided metadata include SCM information, build time, operating system, Java runtime, Maven execution information, build user, build host name, and build version.
Lattice is a Java build system with strong multi-module support. Build files are written not in XML, but in the Python language. The benefits are much better readability and powerful imperative build scripting. For multi-module projects, Lattice uses topological sorting to decide the correct order to build each module. Because a custom task is just a regular Python function, they can perform any type of work, including invoking other Java build systems such as Ant, Maven, or Ivy.
CI-Eye is a powerful continuous integration build radiator requiring no installation and almost no set-up. CI-Eye talks to many different CI servers through their REST APIs (so no plug-ins are required). Currently, support is offered for Hudson, Jenkins, and TeamCity. CI-Eye runs as a standalone Web application.
Upmf is a source-based package manager written almost completely in Scheme. The user is able to search, build, and remove packages. Since Scheme through GUILE is very extensible, the user can customize the procedures, or even exchange them with his own, if wanted. Packages are stored in their own self-contained directories and are incorporated into the filesystem with help of GNU Stow.