regex101
No liveness check has reached it yet; it has been in the index since 8 Oct 2026. How this is checked
regex101 provides an interactive editor for building and testing regular expressions with real-time matches, substitutions, extractions, and unit tests. It supports multiple regex flavors, token explanations, debugging, code generation, sharing, and exporting match data for developers.
Inferred · not functionally tested
Overview
6 featuresPurpose: Testing, debugging, explaining, and converting regular expressions across programming language flavors.
Inferred · not functionally tested
Audience: developers and technical users working with regular expressions
Inferred · not functionally tested
Functions: Unknown
Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown
Recorded constraints: pricing: freemium · license: Proprietary · platforms: WEB · deployment: browser, cloud_managed
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: regex101.com. These links do not verify the individual claims.
regex101 is a Testing & QA project. Inferred · not functionally tested: Testing, debugging, explaining, and converting regular expressions across programming language flavors. Inferred · not functionally tested: It is built as a B2B product for developers and technical users working with regular expressions. Basis unknown · not verified: A free plan is available. Basis unknown · not verified: It runs on the web.
It is developed by regex101. Inferred · not functionally tested: Among its 6 catalogued features are regex editor, real-time matches, and regex debugger.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- Regex editor
- Real-time matches
- Regex debugger
- Regex conversion
- Token explanations
- Code generation
Topics: Inferred · not functionally tested
Built with & integrations
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about regex101
- What is regex101?
- Inferred · not functionally tested: Testing, debugging, explaining, and converting regular expressions across programming language flavors. It is catalogued under Testing & QA on PulseGate.
- Who is regex101 for?
- Inferred · not functionally tested: regex101 is a B2B product built for developers and technical users working with regular expressions.
- Does regex101 have a free plan?
- Basis unknown · not verified: Yes — there is a free tier, with paid plans for advanced use.
- What platforms does regex101 run on?
- Basis unknown · not verified: regex101 runs on the web.
- Is regex101 still active?
- Unverified. regex101 has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
- What are alternatives to regex101?
- Similar projects tracked by PulseGate include RegExr, RegEx Tester, and RegexEditor.dev.RegExrRegEx TesterRegexEditor.dev
- Who makes regex101?
- regex101 is developed by regex101.
Similar projects
Closest matches by what these projects do