Developer Reference Hub
Technical Cheatsheets for Instant Syntax Lookup
Searchable, 1-click copy quick references for regular expressions, Git commands, HTTP network status codes, and modern CSS layouts. 100% free with no signups.
Developer Reference27 syntax rules
Regular Expressions (Regex) Cheatsheet & Syntax Quick Reference
A fast, searchable Regex cheat sheet. Character classes, anchors, quantifiers, lookarounds, and ready-to-copy regular expression patterns.
Anchors & BoundariesCharacter ClassesQuantifiersCommon Battle-Tested Patterns
Developer Reference20 syntax rules
Git Commands Cheatsheet: Complete Architecture & Quick Reference
A pragmatic Git cheat sheet covering everyday commands, undoing mistakes with reset and revert, interactive rebase, and branch workflows.
Setup & ConfigurationStaging & CommittingBranching & MergingStashing & Temporary StorageUndoing Mistakes
Developer Reference18 syntax rules
HTTP Status Codes Cheatsheet: Complete 1xx–5xx Reference
A complete HTTP status code reference guide. Understand 200, 301, 400, 401, 403, 404, 500, 502, and 503 response codes with debugging tips.
2xx Success Codes3xx Redirection Codes4xx Client Error Codes5xx Server Error Codes
Developer Reference14 syntax rules
CSS Flexbox & CSS Grid Cheatsheet: Visual Layout Quick Reference
A complete CSS Flexbox and CSS Grid cheat sheet. Container properties, item alignment, grid templates, and responsive layouts.
Flexbox Container PropertiesFlexbox Item PropertiesCSS Grid Container Properties