Underscore.php features a good hundred of methods for all kinds of types : strings, objects, arrays, functions, integers, etc., and provides a parsing class that help switching from one type to the other mid-course.
TaffyDB / GitHub
Custom theme and integration for a GREENTONIC client. GREENTONIC did the design & layout.
HKM Stahl GmbH
Icon set made with pure css code, no dependencies.
Simple way to make sure you are assigning unique IDs to a series of elements.
If you want to do IETF RFC-4122 compliant Universally Unique Identifiers (UUID), checkout Pure UUID.
Seems to be all about unique IDs this week ;)