I personally consider that the CEFR is a great way for people to show their command of a language. Nowadays, more non-European institutions and people are adopting this system.
I’ve recently found a free software developed by the Lancaster University called Dialang which provides an extensive examination of different aspects like reading or listening, and that finally gives a score in each of the areas compared to the CEFR, and most important, how to improve it.
Also, you can not only test your level of English but of many other thirteen European languages (like Spanish, French, German, Dutch…)
This exam is used by many European universities for determaning the level of the students.
There are two versions of Dialang , the online version  or the downloadable version, which you can get from the official page.
The first time I’ve downloaded I wasn’t able to launch it, because of some plug-in missing, (that I think you can find in the web), but in my case, it worked downloading the next archive from the UNED page (I suppose is the same archive)