innounp for Windows

What this tool does

innounp is a lightweight command-line utility for extracting files from installers built with Inno Setup. It lets you unpack self-extracting installers so you can inspect or reuse the packaged files without running the installer GUI.

Modern compatibility and maintenance

Although upstream development stalled around 2020, community updates have adapted the tool to work with more recent Delphi versions and contemporary Windows environments. Those adjustments keep innounp usable and stable on modern systems.

Notable capabilities

• Provides improved error reporting and handling for more predictable scripting behavior.
• Supports exit codes so scripts and batch jobs can detect success or specific failure conditions.
• Adds new command-line switches to expand control; notable examples include -l and -u for targeted actions.
• Runs as a free console program, requiring no graphical interface.

How to integrate into automation

Use innounp in batch files or CI scripts by checking its numeric exit codes after each run and branching accordingly. Combine the new switches (for example, -l to list contents and -u to extract) with conditional logic to perform listing, selective extraction, or validation steps automatically.

Alternatives to consider

• SHAREit (free) — a recommended alternative for moving or sharing files, although it serves a different primary purpose than an installer unpacker.
• Other unpackers — several extractor utilities exist that can also handle Inno Setup packages; choose one based on licensing and feature fit.

Summary

innounp remains a practical, no-cost option for developers and power users who need to extract Inno Setup packages. With updated compatibility and extended command-line controls, it is straightforward to include in automation workflows despite limited official updates.