Launch4j is a small and multiplatform tool for Java programmers, enabling convenient packaging of JAR archives into EXE executable files. With its help we will also configure the icon and the welcome screen for our application, determine the required version of the JRE, and so on. The program was written in Java and despite its relatively large capabilities is very easy to use.

Its main task is to obtain a native EXE extension for applications written in Java and distributed as JAR files. In addition, Launch4j allows you to manipulate many important attributes of the developed software from the programmer's and user's point of view. It is possible to define the icon for the application, process name, initial/maximum heap size, specify the minimum required version of the Java virtual machine, add information about the program, as well as a digital signature.

The Launch4j features small size and the ability to operate the tool using the GUI or from the command line. The tool was released in versions for Windows, Linux and Mac OS.