Validation

FontfitGo!

Enter website and simply edit the fonts to test them live directly.

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Responsive Email CSS InlinerGo!

Bring Your Email Styles Inline. Use the Foundation for Emails Inliner to do it.

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Edge Dev ToolsGo!

Check and debug your site with Microsoft’s cross platform tools

CrittercismGo!

Crash reports tools. Crittercism helps you deliver an exceptional mobile experience.

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Mighty Deals

Amazing and exclusive deals for web professionals. Check it out!

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PutsMailGo!

Great tool to test your HTML emails before sending them. By Litmus.

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RsizrGo!

Test your responsive web page in a matter of seconds.

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Loader.ioGo!

Free load testing service to stress test web-apps & apis.

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HockeyAppGo!

Collect live crash app reports, get feedback from your users and beta distribution.

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GhostlabGo!

Synchronized browser testing for web and mobile.

MobilizerGo!

Website responsive design testing on real devices. Screenshot generator.

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UX Project ChecklistGo!

UX projects checklist. Everything about user experience.

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MixpanelGo!

The most advanced analytics platform for mobile.

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UserTestingGo!

Get feedback of real people using your web or mobile app.

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BrowserSyncGo!

Keep multiple browsers & devices in sync when building websites.

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Google Cookie ChoicesGo!

Popup and notification bar for devs looking to comply with European laws.

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Pixl PreviewGo!

Realtime mobile design previews for Android devices.

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LiveViewGo!

Remote screen viewing app. Test your web and app designs on iOS devices.

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UberlayerGo!

Design to the pixel putting floating images on top of your computer screen. Mac only.

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PrismGo!

Prism Multi-Device Web Proxy. Test multiple different devices, simultaneously.

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CompsGo!

Load images and easily overlay them onto your website for comparing against a given design.

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BrowserStackGo!

Instant access to all desktop and mobile browsers for testing purposes.

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Cookie ConsentGo!

A free, open source solution to the EU cookie law.

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CSS LintGo!

Improve, optimize your CSS files and find syntax errors.

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Usability checklistGo!

Usability checklist, which can be used to quickly catch common usability issues on websites.

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