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SPECIFICTION
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AltSnap

github.com

Free plan Windows
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Spec score 7.9 #17 of 65 in Window Management Software

Spec sheet

Free plan
YesRead 19 Sep 2026 · github.com
License
The repository lists GPL-3.0 as the project license.Read 11 Oct 2026 · github.com
Antivirus alerts
The README says some VirusTotal alerts on builds are false positives, usually from SecureAge APEX and sometimes other vendors.Read 11 Oct 2026 · github.com
Architecture builds
The README documents 32-bit, x86-64, and ARM64 Windows builds, and the latest release notes say ARM64 builds are provided but untested.Read 11 Oct 2026 · github.com
FancyZones compatibility
The wiki describes setting up AltSnap zones to match Microsoft PowerToys FancyZones and provides a restore option for FancyZones-snapped windows.Read 11 Oct 2026 · github.com
Keyboard and mouse actions
The configuration allows users to choose activation hotkeys and assign actions to mouse buttons or keyboard shortcuts.Read 11 Oct 2026 · github.com
Notable limitation
The README says the Hooks windows feature and focus-on-typing feature were removed or disabled in this fork.Read 11 Oct 2026 · github.com
Process controls
AltSnap offers pause-process options and blacklists that can disable move, resize, or scroll actions for selected programs.Read 11 Oct 2026 · github.com
Security design
The maker says AltSnap injects nothing into other applications and removed the original hooks feature because it required DLL injection.Read 11 Oct 2026 · github.com
Snap layouts
Users can configure custom snap layouts, extend windows across zones, and enable a grid mode.Read 11 Oct 2026 · github.com
Supported Windows versions
The project says it is oriented toward Windows users from Windows NT 4 through Windows 11 and has mostly been tested on Windows XP and Windows 10.Read 11 Oct 2026 · github.com
Transparency
The README lists transparent window dragging among AltSnap’s added options.Read 11 Oct 2026 · github.com
Window control
AltSnap lets users move and resize windows by holding Alt and clicking anywhere in a window.Read 11 Oct 2026 · github.com
Window snapping
It supports snapping windows to screen borders and to other windows, with configurable snap thresholds.Read 11 Oct 2026 · github.com

Plans and prices

Free Free Windows desktop utility · GPL-3.0 Read 11 Oct 2026 · github.com

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