HTML5 Please is a new site reflecting the suitability of the latest Web Standards that are still works in progress. It’s somewhat similar to Can I Use.
As CSS3 sediments itself into the browser, we can look to improvements in CSS4 that should help simplify CSS files (partly be reducing repetition). The :matches() pseudoclass looks very good, ut the most important bit so far is the subject selector ‘$’ which will make selection of a parent element possible for the first time …
Some cute CSS-based speech/thought bubbles. Mostly they use pure CSS, but a couple require additional markup.
Table of compatibility showing Browsers vs Web APIs.
A preliminary view of Internet Explorer 10′s capabilities. Microsoft are playing a crazy catchup game again, hoping their browser (which is most definitely not part of the operating system) can be good enough that people won’t need to download or use competitor browsers. It seems silly that they’re still in this game. Netscape (and Joshua) …
XUL flex box comes to CSS. The potential to simplify multi-column and dynamically sized tabular content, whilst not polluting the markup. Much rejoicing may follow.
A useful table showing which parts of specifications are supported by which browsers (and also data formats can be handled).
Some very pretty HTML5 & Canvas experiments.
An HTML5 cheatsheet covering: doctype, rounded corners, box and text shadows, border images, columns, svg, canvas & text rotation.
Another boilerplate HTML5 template. A useful starting point for some pages no doubt.
Proposals from the WebKit project written up as specs. Some have made it into the W3C for more general use.
Articles related to HTML5 from the always well-written “A List Apart”.