|IE and Edge||Chakra|
**iOS developers should be aware that Mobile Safari leverages Nitro, but UIWebView does not include JIT compilation, so the experience is slower. With iOS8, however, developers can use WKWebView which includes access to Nitro, speeding up the experience considerably. Hybrid mobile app developers should be able to breathe a little easier.
***One of the factors in the decision to split io.js from Node.js had to do with the version of V8 that would be supported by the project. This continues to be a challenge, as outlined here.