What is this application?

QQ is probably the most popular IM software in China. When I log into QQ with my account, a news window pops up (see attached photo):

So my question is, is this news windows purely a webpage/application, which can be achieved via HTML/CSS/JS, or something else, like a software?

And just a another example:

Haofang Gaming Platform is also very popular among Chinese gamers. My English is plain, I don't know how to say this, but it bas开发者_StackOverflow社区ically connects people over the internet that intend to play a specific game with many others in a specific geographic location, which providing a LAN like very fast and stable gaming platform. So is this also a purely web application? because according to my humble knowledge, it can also be achieved roughly the same way as a webpage

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If you're using Chrome, choose Tools / Developer Tools from 'Settings' menu (CTRL + SHIFT + I) and click on magnifying glass icon (inspect element). Then click on for part of the page you want to inspect to see whether it is HTML or some applet.