Carbon - a simple PHP API extension for DateTime. Just everything you may need while working with dates in PHP.
PHPVerbalExpressions - the easiest way to start with Regular Expressions. Write it in OOP way
$regex=new VerbalExpressions;
$regex ->startOfLine()
->then("http")
->maybe("s")
->then("://")
->maybe("www.")
->anythingBut(" ")
->endOfLine();
$regex->test("http://d.com")
A lot of implementations on other languages exist
Carbon - a simple PHP API extension for DateTime. Just everything you may need while working with dates in PHP.
seenjs.io renders 3D scenes into SVG or Canvas. I am quite impressed with this demo
GestureKit SDK (JS) for creating and recognising gestures in mobile and web apps
Nice looking cross-platform MongoDB GUI client RoboMongo
Mailcatcher - runs a super simple SMTP server which catches any email message sent to it to display in a web interface.