re2c

It is a free and open-source lexer generator that supports C/C++, D, Go,

Lexical analyzer generator · re2c.org

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What re2c’s own pages say

What it says it doesIt is a free and open-source lexer generator that supports C/C++, D, Go, re2c.org
IntegrationsBRL-CAD, ninja, php, spamassassin, wake, yasm re2c.org
Open sourceYes re2c.org
Licensere2c is in the public domain. re2c.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.