Squirrel.Windows review
A focused Windows packaging toolkit with strong support for delta updates.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Squirrel.Windows is an open-source toolkit for packaging, installing, distributing, and updating Windows desktop applications. It accepts NuGet packages and supports applications written in C# and other languages, including native C++ applications. It is a strong fit for teams distributing Windows software that needs automated background updates, delta packages, shortcut management, and release channels rather than a cross-platform packaging system.
Its main strength is the breadth of its Windows release workflow. The command-line Squirrel.exe tool creates Setup.exe, Setup.msi, full .nupkg packages, delta .nupkg packages, and a RELEASES file. Applications can use the UpdateManager API for background update checking and application, installation workflows, and Desktop and Start Menu shortcut management. Staged rollouts and release channels add control over how updates are distributed, while silent installation and CI/CD support suit automated release processes.
The ecosystem fit is practical for teams already using NuGet or hosting release artifacts through Microsoft IIS, Amazon S3, or GitHub. Squirrel.Windows remains narrowly focused on Windows application distribution, so teams targeting other platforms should choose a tool with broader platform coverage. Its command-line and library-based model also favors developers prepared to integrate packaging and update behavior into their release workflow. Choose Squirrel.Windows for Windows desktop applications where full and delta updates matter; choose an alternative when cross-platform distribution is a primary requirement or when a more managed packaging experience is preferred.
Squirrel.Windows pros and cons
- Where it wins
- Generates Setup.exe, MSI, full packages, and delta packages
- Supports background updates, channels, and staged rollouts
- Integrates with NuGet, IIS, Amazon S3, and GitHub
- Where it doesn't
- Limited to Windows application distribution
- Requires command-line and release workflow setup
- Failed silent installations may still show error dialogs
Squirrel.Windows fact sheet, pricing and score →
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