Step 2 of 4 · ProjectsBy tax area
All projectsBy tax areaCross-cutting
116 open source projects that cut across taxes.
Every project on the list whose tax area includes Cross-cutting, grouped by kind. Entries without a warning come first in each group; the labels mark what to check.
116 projects85 maintained69 on the map28 jurisdictions + globalFacts checked 6 Oct 2026
Labels mark what to check before you rely on an entry: inactive or archived code, demos, paid services and unclear licences. Only maintained projects for companies and tax authorities appear on the map. Search and filter the whole list.
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