Check that your HTML code conforms to your coding standard

Trianglify is a javascript library for generating colorful triangle meshes that can be used as SVG images and CSS backgrounds.

Trianglify is open source software.

Prototype the design of your website in seconds in Photoshop
WITH THE VELOSITEY PHOTOSHOP EXTENSION BY D&K

Free Prototyping for Everyone.
No coding required.
Turn sketches, wireframes, PSDs and designs into interactive mobile and web prototypes in just a few clicks. All synced in real-time from Dropbox.
Join 16,345 creative folks & start bringing your designs to life.

Offline
Automatically display online/offline indication to your users.

GitHub ★ 4,506
Odometer
Smoothly transitions numbers with ease.

GitHub ★ 3,312
PACE
Automatically add a progress bar to your site.

GitHub ★ 3,731
Tether
A positioning engine to make overlays, tooltips and dropdowns faster

GitHub ★ 1,734
Vex
A modern dialog library which is highly configurable and easy to style.

GitHub ★ 2,900
Shepherd
Guide your users through a tour of your app

GitHub ★ 408
Drop
A library for creating elements for use with Tether.

GitHub ★ 312
Sortable
Drop-in script to make tables sortable.

GitHub ★ 716
Select
Styleable select elements built on Tether.

GitHub ★ 103
Tooltip
CSS Tooltips built on Tether.

GitHub ★ 68
Messenger
Growl-style alerts and messages for your app.

GitHub ★ 2,208
Signet
Display a unique seal in the developer console of your page.

Quickly Create iOS Prototypes
Flinto strikes the perfect balance between fast prototyping and realism.
Prototypes run on iPhone or iPad and can be shared with anyone.