Personally i don't care one bit about web capabilities for games. I don't want to play games in browsers.
That said, i have to agree that it's nice sometimes for smaller games. The flash-game era was glorious and spawned quite a number of great things.
I did some experiments with allegro tonight. After some struggles with setting up for vs2010 and finally migrating to vs2015 (which was super ezpz with nuget) i must say i'm quite satisfied with it so far.
Granted, you have to write your own systems with it (input management, sprite handling/animation), but i don't mind that. The rendering capabilities are straight forward and apparently really fast. API reminds a little of gdi+ actually in its simple-ness. Input handling works well, although i didn't check for gamepad support yet.
You have primitive rendering available out of the box which is super nice to have for prototyping, font rendering with ttf support. The only thing that i haven't stumbled upon is music playback. I read about midi support, but nothing besides that. Would love some xm/it playback if not ogg streaming.
So far it supplies me with everything i need. I'll continue to work with it, even if my cpp skills are hella rusty.
Thanks for mentioning it ambi!