| bluebird | 3.7.2 | Full featured Promises/A+ implementation with exceptionally good performance |
| most | 1.9.0 | Monadic streams for Ultra-high performance reactive programming |
| native-promise-only | 0.8.1 | Native Promise Only: A polyfill for native ES6 Promises **only**, nothing else. |
| promiz | 1.0.6 | A proper compact promise (promises/A+ spec compliant) library. |
| when | 3.7.8 | A lightweight Promises/A+ and when() implementation, plus other async goodies. |
| promise-polyfill | 8.3.0 | Lightweight promise polyfill. A+ compliant |
| es6-promise-pool | 2.5.0 | Runs Promises in a pool that limits their concurrency. |