Western European languages mostly fall within two Indo-European language groups: the Romance languages, derived from the Latin of the Roman Empire; and the Germanic languages, whose ancestor language came from southern Scandinavia. Romance languages are spoken primarily in south-western Europe as well as in Central Europe. Germanic languages are spoken in Northern Europe, the British Isles and some parts of Central Europe.
All Western European languages belong to the same Indo-European language family, which is broken into the Romance, Germanic, Baltic, Slavic, Celtic and Greek branches. Western European languages also primarily use the Latin alphabet. French, Portuguese, Italian, Spanish and Italian are the most requested Western European languages for translation and localization.
Several other smaller languages outside the two main groups exist in Western Europe. Other Indo-European languages include the Celtic group (that is, Irish, Scottish Gaelic, Manx, Welsh, Cornish, and Breton and Greek. In addition, a distinct group of Uralic languages (Finnish and Hungarian) is spoken mainly in Finland, and Hungary. Maltese is the only Semitic language that is official within Western Europe, while Basque is the only Western European language isolate.
Multilingualism and the protection of regional and minority languages are recognised political goals in Western Europe today. The Council of Europe Framework Convention for the Protection of National Minorities and the Council of Europe's European Charter for Regional or Minority Languages set up a legal framework for language rights in Europe.
The following is a table displaying the number of speakers of the languages in Western Europe spoken by more than 5 million people: Catalan language (10 000 000), Croatian language(5 752 090), Czech language (10 619 340), Danish language (5 522 490), Dutch language (21 944 690), English language (59 800 000), Finnish language (5 392 180), French language (65 700 000), German language (95 000 000), Greek language (13 432 490), Hungarian language (12 606 130), Italian language (59 400 000), Polish language (38 663 780), Portuguese language (10 000 000), Slovak language (5 187 740), Spanish language (45 000 000), Swedish language (9 197 090).
Source : Wikipedia