SlicyGo!

Improve your UI & web design workflow with this app. Only for Mac.

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TinyPNGGo!

Online optimization tool for PNG images that preserves full alpha transparency.

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IcoMoonGo!

Usefeul site to build custom icon fonts. Extra Icon packs, font CDN…

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PlaceCageGo!

Best placeholder images generator ever created 🙂

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CSS MaticGo!

Online CSS tools to play with CSS gradients, shadows, borders…

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BLOKKGo!

Font that emulates paragraphs for people who doesn’t like lorem ipsum.

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Blue VertigoGo!

TONS of useful links. Images, icons, sounds, fonts, logos… Save in your bookmarks now!

Color Palette GeneratorGo!

Create color pallettes from images. Source code available.

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Morgue FileGo!

Free stock photos. Lot of images and overall good quality. No register needed.

Color Schemer DesignerGo!

Old tool but still useful. Scheme generator, colorblind testing, different export options…

Touch Gesture Reference GuideGo!

Nice reference guide for designers and devs working on touch-based user interfaces.

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jQuery MasonryGo!

Dynamic grid layout plugin for jQuery. Rearranges elements easily with this plugin.

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Frame BoxGo!

Quickly online sketching & wireframing tool. Save and share options.

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VideoSWSGo!

HTML5 Video Player Comparison. It will help you choosing the best player for your projects.

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Freebies BoothGo!

Website with a good selection of free PSD resources for web & UI design.

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CopyPasteCharacter.comGo!

A web and iPhone app for copying special chars that comes with typefaces.

HTML Email BoilerplateGo!

Template for build html mailings. Compatible with most email clients.

CodeacademyGo!

Improve your skills with Codeacademy. A really good online learning choice.

Fireworks Texture GalleryGo!

Ttextures and patterns you can use in Adobe Fireworks

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Creative MarketGo!

A really good platform where you can buy/sell online graphics-related goodies.

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HTML5 BoilerplateGo!

HTML5 Boilerplate helps you build fast, robust, and adaptable web apps or sites.

Color HexGo!

Get information about any color: conversions, schemes, blindness simulator, …

Screenqueri.esGo!

Nice web app to test your responsive designs. Multiple views at once.

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Fakeimg.plGo!

Fakeimg.pl is a little tool that generates images with an URL. Image placeholders 4 everyone!

Can I useGo!

Compatibility tables for support of HTML5, CSS3, SVG and more.

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HTML5 DoctorGo!

A quick reference of elements that are new or have been redefined in HTML5.

Pineapple.ioGo!

Awesome site with tons of tutorials, tools and assets for developers and designers

Skala PreviewGo!

Preview your designs on iOS devices and Mac. Multiples devices at one.