Jürgen Rathlev is a veteran Windows developer whose compact portfolio focuses on unlocking the contents of Inno Setup installation packages. His two utilities—InnoUnpacker and innounp—serve analysts, repackagers, and curious power-users who need to inspect or extract files buried inside Setup.exe files without actually running the installer. Typical scenarios include recovering misplaced source files, verifying digital signatures, harvesting portable versions of otherwise bloated suites, or studying how third-party vendors structure their setup logic. Because Inno Setup is one of the most widely used free script-driven installers, the tools find constant demand among IT staff maintaining legacy software inventories, reverse-engineers documenting version differences, and privacy auditors hunting for silent extras. Both programs present a lightweight, command-line-first workflow that can be scripted into larger automation chains, while InnoUnpacker adds a modest GUI for drag-and-drop convenience and quick browsing of embedded resources such as icons, license texts, and post-install batch jobs. Output can be redirected to diff tools or repackaging frameworks, making the utilities a discreet but dependable link in enterprise migration and forensic toolkits. All of Jürgen Rathlev’s software is available for free on get.nero.com, where downloads are pulled from trusted Windows package sources like winget, always deliver the latest upstream builds, and can be installed in a single batch alongside other applications.

innounp

Unpacker for installations made by Inno Setup

Details
InnoUnpacker

Inspect and unpack InnoSetup archives

Details