One thing that entry does not cover is all lower-case names. Although a couple things I looked up (gnuplot, xkcd), Wikipedia does seen to respect all lower-case. I'm not sure how many companies actually have all lower-case names--even if their logo is all lower-case. And my observation is that even many projects that are nominally lower-case, aren't very consistent about it as in the current example.
> Follow standard English text formatting and capitalization practices, even if the trademark owner considers nonstandard formatting "official", as long as this is a style already in widespread use, rather than inventing a new one: (But see exception below under § Trademarks that begin with a lowercase letter.)
> use: Time, Kiss, Asus, Sony Mobile. (Capitalize IKEA, IBM, as acronyms/initialisms.)
> avoid: TIME, KISS, ASUS, SONY Mobile
https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Trad...