ContextRouter is a simple plug-and-play plugin allowing you to use different contexts, and, based on the http_host context settings you need to set anyway, it routes your front-end requests as required.
In essence it's like the Gateway plugin from the docs, except you don't have to manually edit the plugin: it takes the settings you have already configured in your context and routes based on that. It caches the http_host => context relation so it doesn't perform excessive database lookups.
Install the plugin and make sure your contexts have a http_host variable set. If it doesn't seem to route properly, try clearing the cache to update the context - http_host caching.
New in ContextRouter 1.0.0
There are no release notes for this version.