ServiceWorkers (formerly Navigation Controllers) are a new system that provides event-driven scripts that run independent of web pages. They are similar to SharedWorkers except that their lifetime is different and they have access to domain-wide events such as network fetches.
Service Workers are now under active development in MS Edge. You can track progress at https://developer.microsoft.com/en-us/microsoft-edge/platform/status/serviceworker
Matheus Kautzmann commented
The Service Worker spec will empower the creation of new and better offline apps. Please support it.
Any updates here?
Šime Vidas commented
The title of this entry should be amended with “(mother effing OFFLINE web apps)” to make it absolutely clear what this is.