Build, test, and ship regex with less friction.

Documentation for regex101, regex101 Pro, the commercial regex parser, and self-hosted enterprise deployments.

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>20Mregex101 users

Nearly 4,000regex parser tests

10supported regex flavors

Documentation

regex101 Pro

Use benchmarking, regex formatting, multiple test strings, and substitution pipelines.

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Regex Parser

Integrate the commercial package and review its ten flavors and typed output.

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Enterprise Licenses

Self-host regex101 with deployment, legal, and operational guidance.

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Application Docs

API notes, FAQ entries, and platform guidance for the core regex101 application.

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Community

regex101 keeps evolving with direct feedback from developers using it every day. If you want to follow along or contribute ideas, join the GitHub community.