Compare software

Inno Setup vs NSIS: catalog facts
Inno Setup	NSIS
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source.
Windows	Windows
A single script file describes the whole installer, and the permissive licence allows commercial use, modification and…	Produces small installers Script-based logic handles complex installation tasks
It builds Windows installers only, and anything beyond the basics means learning its Pascal scripting.	Requires learning its own scripting language Builds installers for Windows only
Downloadable app	Downloadable app
Open source	Open source
License: Inno Setup License	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.