regex101 is a web-based tool for building, testing, and debugging regular expressions.
The tool addresses the challenge of writing and validating regex patterns by providing an interactive environment where developers can test expressions against sample text in real time, see matches highlighted, and debug their patterns. It supports multiple regex flavors and languages, allowing users to write code generators that convert regex patterns into language-specific implementations.
The tool suits developers who work frequently with regular expressions and need immediate visual feedback on pattern matching behavior. It is particularly valuable for those learning regex syntax or troubleshooting complex patterns. The project maintains an API for programmatic access and accepts community contributions for new code generators and regex flavor support.
Development activity on the project is limited to issue tracking through this repository, with the actual application hosted separately. The maintainers track feature requests and bug reports through GitHub Projects, organizing them by category such as code generator requests and regex flavor support.
