regex101 vs RegexPilot

regex1019.8Visit RegexPilot8.5Visit

Higher score regex101 #1 in Regular Expression Testers 9.8/10 Free plan · 7-day trial Free plan✓ 4 of 4 features Visit regex101

vs

RegexPilot #2 in Regular Expression Testers 8.5/10 Free plan · paid from €19 · 30-day trial Free plan✓ 3 of 4 features Visit RegexPilot

• regex101 fits best

  Teams needing a full-featured regex workbench

• RegexPilot fits best

  Developers needing broad regex flavor coverage

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Side by side

Feature	regex101 9.8/10 Visit ↗	RegexPilot 8.5/10 Visit ↗
At a glance
Editor score	9.8	8.5
Ranking	#1 in Regular Expression Testers	#2 in Regular Expression Testers
Best for	Teams needing a full-featured regex workbench	Developers needing broad regex flavor coverage
Pricing model	Free plan + paid	Free plan + paid
Starting price	Not published	Not published
Free plan	✓	✓
Free trial	—	—
Free trial length	7 days	30 days
Deployment	Cloud, Self-hosted	Desktop
Platforms	Web	Web, macOS
Support	Email, Docs	Email
Integrations	2 integrations	8 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business
Features regex101 4/4 · RegexPilot 3/4
Pattern explanation	✓	✓
Step-through debugger	✓ (best)	—
Code generation	✓	✓
Saved patterns	✓	✓
Specs
Regex flavors	PCRE2 (PHP), JavaScript, Python, Golang, Java, .NET, Rust, POSIX ERE, POSIX BRE, PCRE (Legacy)	JavaScript, TypeScript, Python, Java, C#, PHP, Ruby, Go, Perl, Rust, Scala, Kotlin, Groovy, Clojure, Elixir, R, Dart, Swift, MySQL, PostgreSQL, POSIX shell
Available platforms	Not published	Not published
Our review
Pros	Supports multiple regex engine flavors and POSIX variants Combines explanations, debugging, code generation, and unit tests Offers saved workspaces, exports, benchmarking, API, and MCP access	Tests patterns across 21 authentic regex engines Visual builder, explanations, replacements, and code export VS Code extension supports two-way editing
Cons	Pro features require a paid plan Enterprise deployment and support are reserved for Enterprise The broad feature set may exceed the needs of simple regex checks	Full flavor coverage requires the €19 one-time license AI generation requires a bring-your-own key Step-through debugging is still on the roadmap
Our verdict	regex101 is a browser-based regular-expression editor for developers and technical users who need more than basic pattern matching. It supports matching, substitution, extraction, unit tests, pattern explanations, code generation,… Read the review →	RegexPilot is a visual regular expression builder and tester for developers who work across multiple programming languages. Its railroad-style canvas supports drag-and-drop pattern construction, while live match and capture-group… Read the review →

Strengths and trade-offs

• regex101 — where it wins

  • Supports multiple regex engine flavors and POSIX variants
  • Combines explanations, debugging, code generation, and unit tests
  • Offers saved workspaces, exports, benchmarking, API, and MCP access

  Where it doesn't

  • Pro features require a paid plan
  • Enterprise deployment and support are reserved for Enterprise
  • The broad feature set may exceed the needs of simple regex checks

• RegexPilot — where it wins

  • Tests patterns across 21 authentic regex engines
  • Visual builder, explanations, replacements, and code export
  • VS Code extension supports two-way editing

  Where it doesn't

  • Full flavor coverage requires the €19 one-time license
  • AI generation requires a bring-your-own key
  • Step-through debugging is still on the roadmap

• regex1019.8/10 · Free plan · 7-day trial

  A broad regex workbench with debugging, explanations, testing, and code generation.

  Visit regex101Full verdict →
• RegexPilot8.5/10 · Free plan · paid from €19 · 30-day trial

  A visual regex workspace with 21 authentic engines and VS Code integration.

  Visit RegexPilotFull verdict →