Obscure Web Logos

Logos for web technologies, which were hard to find from a simple Internet search.

CSS

When searching for CSS logos, most results are some variation on the HTML5 logo, often in blue.
However, w3.org actually has the official CSS logo, and

it looks ok i guess

There are other variations on the logo:

• small CSS button
• Made with Cascading Style Sheets
• small CSS button but transparency (dithering!)
• Made with Cascading Style Sheets but transparency
• big CSS button but transparency
• CSS but SVG
• CSS but SVG and transparency
• Made with Cascadin Style She (no link anywhere! maybe because on systems like mine the font overflows)
• Made with Cascadin Style She, but transparent (also no link)

AtomEnabled

When searching for the Atom Feed logo, I get many different images representing atoms, as well as variations on the RSS logo. The actual logo does show up! but it's easy to lose among the impostors.

The correct AtomEnabled logo is now on Wikipedia, hopefully making it less obscure.

The W3C Feed Validator uses a "Valid Atom" button, in the background of which the AtomEnabled logo can be seen.

The button is from Atom Buttons on atomenabled.org (archived).

An actual SVG of the AtomEnabled logo is located at intertwingly.net. It looks weird when the background isn't white, so I have created a version that works on any-coloured background:

Fun side fact: AtomEnabled used to be called Pie. The name was changed after many many names for Pie were proposed.