CAT-tools (Computer-assisted translation tool) are software for translation which helps to make the work easier and better.

We usually use the following CAT-tools:

1. SDL Trados Studio 2011 or 2014
   
2. Memoq 2015
   
3. 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