Rubular
Test regular expressions in Ruby as you write them

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Categories: Regular Expressions Ruby
Tags: regex regular expressions ruby test

Color review
Check your color contrast

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Categories: Color Accessibility
Tags: color check test contrast

Contrast Checker
Check your color palette for accessible combinations

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Categories: Color Accessibility
Tags: color check test contrast palette

SSL Server Test
Perform a deep analysis of the configuration of any SSL web server on the public Internet

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Categories: Security
Tags: ssl configuration

Mocky
Mock your HTTP responses to test your REST API

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Categories: APIs
Tags: http rest api test

Webhook.site
Test webhooks in realtime

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Categories: APIs HTTP
Tags: test realtime webhook

Fonty
Test web fonts directly on live sites

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Categories: Fonts
Tags: font webfont test