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Manifold vs GRASS: catalog facts
Manifold	GRASS
Paid One-time purchase of $145, fully paid.	Free Free and open source, with community and commercial support available.
Windows	Windows, macOS, Linux
Automatic parallel processing on multiple CPU cores and GPUs Handles large datasets such as lidar quickly	Broad raster, vector and imagery processing Temporal framework for time series analysis
Windows only Proprietary, with a smaller user community than QGIS or ArcGIS	Steep learning curve for newcomers Geared to analysis rather than simple map viewing
Downloadable app	Downloadable app
Closed source	Open source
License: Proprietary	License not stated
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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