CAT-tools ([[https://en.wikipedia.org/wiki/Computer-assisted_translation|Computer-assisted translation tool]]) are software for translation which helps to make the work easier and better.\\ We usually use the following CAT-tools:\\ - SDL Trados Studio 2011 or 2014\\ - Memoq 2015\\ - Wordfast Pro 3.4\\ We use the following functionality of them:\\ * analyze of files\\ * make translation\\ * make proofreading in track changes mode\\ * split big files for several translators\\ * internal or external spell check\\