| color-js | 1.0.1 | A color management API for JavaScript |
| freezer-js | 0.14.1 | A tree data structure that is always updated from the root, making easier to think in a reactive way. |
| frozen-moment | 0.4.0 | Immutability for Moment.js. Freeze moments so that mutation methods return copies instead of altering the original timestamp. |
| gyrejs | 0.6.5 | Experimental data fetching and state library geared towards ReactJS |
| immstruct | 2.0.0 | Immutable data structure for top-to-bottom properties in component based libraries like React |
| immutable | 4.3.5 | Immutable Data Collections |
| mori | 0.3.2 | Persistent Data Structures for JavaScript |
| nuclear-js | 1.4.0 | Immutable, reactive Flux architecture. UI Agnostic. |
| omniscient | 4.2.0 | A library providing an abstraction for React components for passing the same data structure through the entire component flow using cursors and immutable data structures. |
| seamless-immutable | 7.1.4 | Immutable data structures for JavaScript which are backwards-compatible with normal JS Arrays and Objects. |
| dayjs | 1.11.10 | 2KB immutable date library alternative to Moment.js with the same modern API |
| dinero.js | 1.9.1 | An immutable library to create, calculate and format monetary values. |
| immer | 10.0.4 | Create your next immutable state by mutating the current one |
| luxon | 3.4.4 | Immutable date wrapper |
| icepick | 2.4.0 | Utilities for treating frozen JavaScript objects as persistent immutable collections. |