Jar Ajar is a JAR-based self-extractor for zip files. Zip up files and package them with descriptive images and text using Jar Ajar's graphical interface. When recipients launch the resulting JAR, Jar Ajar guides users through the unzip process.
crcRepair is a utility that is able to fix corrupt files by consulting a database and file mirrors. It is written in pure Java, so it can be used on all platforms with the Java JRE installed.
The InstallGuru is a program written in Java for creating installers for Java and non-Java applications. Since this install application is written in Java, it can run almost on any operating system where there is a JRE.