One of the two main companies that tracks web browser market share is leaving the business <https://www.theregister.com/2020/11/02/netmarketshare_to_end_browser_stats/>. The main reason given is that the “User-Agent” string that browsers send as part of HTTP requests is becoming less and less useful. But then, that was never a good way of detecting browser functionality anyway. An outfit called the Web Incubator Community Group (WICG) has a new proposal, called “Client Hints”, which is a much more granular way for the server to interrogate client-side capabilities.