Development
Validate and analyze URLs for correctness and security
url-validatorDevelopment
Analyze SQL queries for potential performance issues
sql-performance-analyzerDevelopment
Build simple SQL queries visually
sql-query-builderDevelopment
Generate SQL table schema definitions
table-schema-generatorDevelopment
A searchable, localized cheat sheet for regular expression syntax — character classes, anchors, quantifiers, groups & references, lookarounds, escape sequences, and flags — with a built-in quick tester
regex-cheat-sheetDevelopment
Step through how a regular expression matches a string position by position: visualize match attempts, partial successes, backtracks, and captures — a learning tool for understanding regex behavior, not just the final result
regex-debuggerDevelopment
Render a regular expression as an SVG railroad (syntax) diagram showing literals, groups, alternations, and repetition, with capture-group numbering and flag explanations
regex-railroad-diagram-visualizerDevelopment
Preview regex replacements in real-time with detailed diff highlights and statistics
regex-replace-previewerDevelopment
Compare performance of different regex patterns, identify bottlenecks, and detect degenerate cases
regex-benchmarkDevelopment
Detect error-prone and risky regex patterns, check for catastrophic backtracking, unanchored patterns, and provide rewrite suggestions
regex-linterDevelopment
Generate random strings that match a given regular expression pattern
regex-to-string-generatorDevelopment
Test regular expressions against text
regex-tester