Wikipedia:Babel
jaこの利用者は日本語母語としています。
This user can speak Japanese.
ain-2Aynu itak ani taankur ponno isoitak.
en-2This user can contribute with an intermediate level of English.
ru-1Этот участник владеет русским языком на начальном уровне.
uz-1Bu ishtirokchi Oʻzbek tilini boshlangʻich darajada biladi.
This user contributes using Opera.
This user uses Google as a primary search engine.
PHP-3This user is an advanced PHP programmer.
SQL-3This user is an advanced SQL programmer.
HTML-2This user is an intermediate HTML user.
js-2This user is an intermediate JavaScript programmer.
Perl-1This user is a beginning Perl programmer.
Java-1This user is a beginning Java programmer.

I engage in the Japanese edition of Wikipedia and Wiktionary, the English edition of Wikipedia.