Greasy Fork is available in English.
Adds tabs for favourite languages
// ==UserScript==
// @name Wikipedia Language Tabs
// @namespace woky
// @version 0.1
// @description Adds tabs for favourite languages
// @author woky
// @match https://*.wikipedia.org/*
// ==/UserScript==
/* jshint esnext: true */
(function(){
"use strict";
const languages = ['en', 'cs'];
const menu = document.querySelector('#p-namespaces > ul');
if (!menu)
throw 'No menu';
languages.forEach(lang => {
const link = document.querySelector(`.interwiki-${lang} > a`);
if (link) {
const span = document.createElement('span');
span.appendChild(link);
const item = document.createElement('li');
item.appendChild(span);
menu.appendChild(item);
}
});
})();