Squirrel.Windows
Squirrel.Windows: A focused Windows packaging toolkit with strong support for delta updates. Ranked #14 of 29 in Software Packaging Tools by our editors (7.7/10); pricing: Open source; best for windows apps needing delta updates.
At a glance
- Editor score7.7 / 10
- PricingOpen source
- Best forWindows apps needing delta updates
- Paid fromNone
- Output formatsSetup.exe, Setup.msi, full .nupkg, delta .nupkg, RELEASES
- Facts checked20 Sep 2026
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
Our verdict on Squirrel.Windows
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.
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Squirrel.Windows pricing
Squirrel.Windows fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | None |
| Target platforms | Windows |
| Output formats | Setup.exe, Setup.msi, full .nupkg, delta .nupkg, RELEASES |
| Command-line packaging | Yes |
| Silent installation | Yes |
| Auto-update support | Yes |
| Delta updates | Yes |
| CI/CD integration | Yes |
| Deployment | Desktop, Self-hosted |
| Platforms | Windows |
| Support | Docs, Community |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: NuGet, Microsoft IIS, Amazon S3, GitHub |
| Pricing | Open source |
| Website | github.com |
| Facts checked | 20 Sep 2026 |
Squirrel.Windows integrations
Squirrel.Windows lists 4 integrations on its own site.
- NuGet
- Microsoft IIS
- Amazon S3
- GitHub
Alternatives to Squirrel.Windows
- electron-builderA broad Electron release toolkit covering builds, updates, signing, publishing, and CI/CD.9.4
- Advanced InstallerA broad Windows packaging suite for teams managing installers, updates, and deployment automation.9.2
- install4jA capable choice for Java publishers shipping signed installers across major desktop platforms.9.0
See all Squirrel.Windows alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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