Lets you easily create custom ZIP-compatible self-extracting EXE files. 1-Zip gives you an easy, flexible way to make your own self-extracting zip files. You can use a Wizard style interface, or automate the whole process from a template. After the end user expands the archive, you can have a custom command execute. If you are distributing software applications, the custom command can run SETUP.EXE or an installer.1-Zip also provides CRC checking to ensure the integrity of downloaded files.