This is a super super great looking set of tools!
One thing I'd like to see here is a little more explicit connection to ServiceWorkers. These various worker runtimes are patterned off the client's http serving capabilities, ServiceWorker, and ideally many/most of these tools should be useful there too. Making that more explicit/clear & a visible goal would be great.
Really impressive list here though. With hope this is where http handling really starts going.