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Glamorous Toolkit vs Understand: catalog facts
Glamorous Toolkit	Understand
Free Free and open-source software.	Paid Commercial software with a free trial.
Windows, macOS, Linux	macOS
Lets you build custom views and tools for a specific codebase or dataset Combines code, data exploration and documentation in one environment	Cross-references, call trees and dependency analysis Many graph types with plugin support and export
Unusual working style that takes time to learn Most useful once you invest in building your own tools	Paid after the trial More than most small projects need
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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