Dennis Ploetner

Most people are likely to use some lines of PHP or the widget provided by the <a href="https://wordpress.org/plugins/multisite-language-switcher/" rel="ugc">Multisite Language Switcher</a> to integrate the links to the translations in their blogs.
But if you look for an easy way to change the output of the Multisite Language Switcher as an HTML select with some JavaScript that forwards the visitor automatically after selecting an option then give MslsSelect a try.

MslsSelect

Transforms the output of the Multisite Language Switcher to an HTML select

edouardb

WTIpress makes a WordPress site multilingual, and lets you translate posts and pages using the <a href="https://webtranslateit.com" rel="nofollow ugc">WebTranslateIt.com</a> service.

wtipress

Makes a Wordpress site multilingual, and lets you translate posts and pages using the WebTranslateIt.com service.

MslsSelect vs wtipress