Utility library delivering consistency, customization, performance, & extras. A better and faster Underscore.js.

Immutable data collections.

Functional reactive library for transforming, composing, and querying various kinds of data.

Utility library with a focus on flexible functional composition enabled by automatic currying and reversed argument order. Avoids mutating data.

Reactive library with focus on high performance and low memory usage.

Utility library with the biggest difference between other existing solutions is that you can choose to load only the modules/functions that you need, no extra overhead.