gdsdiff is an open-source command-line tool designed for chip designers to perform exact, evidence-oriented comparisons of GDSII layout geometry. It automates the verification process in CAD workflows, helping users identify differences and ensure design accuracy. The tool is suitable for semiconductor layout engineers and EDA professionals.
In the Other dev tools space, gdsdiff takes a focused approach. It focuses on verifying and comparing GDSII layout geometry in CAD workflows without manual inspection. It is built as an open-source project for chip designers. gdsdiff is open source under the GPL-3.0 license. It runs on the command line.
It is developed by SandboChang, and the product first shipped in 2026. Development happens publicly on GitHub with 35 commits in the last 90 days. Key capabilities include GDSII comparison, evidence-oriented diff, and geometry verification.
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