West Germanic:
* High German: German, Yiddish, Luxembourgish
* Low German: Dutch, Frisian, Afrikaans
* Anglo-Frisian: English, Scots, Frisian
North Germanic:
* Scandinavian: Swedish, Norwegian, Danish, Icelandic, Faroese
East Germanic:
* Extinct: Gothic, Vandalic, Crimean Gothic
Other Germanic Languages:
* Ingvaeonic: Old English, Old Frisian, Old Saxon
* Continental West Germanic: Old High German, Old Low German
* North Sea Germanic: Old Norse, Old Swedish, Old Danish
It is important to note that these are not all mutually intelligible. For example, while English and German are both West Germanic languages, they are not easily understood by speakers of each other's languages.
This list does not include all dialects or varieties of Germanic languages. It also does not include creoles or pidgins that have developed from Germanic languages, such as Sranan Tongo or Jamaican Patois.