RegexBuddy - RegexBuddy is your perfect companion for working with regular expressions.
Pattern Monster - Pattern Monster is a pattern maker app to create vector patterns for your projects
Regex Forge - An Ultimate Regex Editor for macOS
PatternPad - Create beautiful geometric patterns
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
Hero Patterns - A collection of repeatable SVG background patterns