The Learner's Dictionaries are frequency-thematic. They can be arranged by themes, levels or parts of speech, not by the alphabet.
The Learner's Dictionaries can include up to 12'000 lemmas. They are divided into 8 importance levels from Beginner to Upper-Intermediate (corresponding to the CEFR levels A1-B2), as well as 300 vocabulary themes grouped into 30 superthemes.
There are the following kinds of these books:
1. Theme-Arranged - intended to help you learn lemmas regardless of their levels or revise them
2. Level-Theme-Arranged - learn lemmas gradually, according to their levels
3. PoS-Theme-Arranged - revise lemmas considering their roles in a language
Entries in the Learner's Dictionaries provide translations, transliterations and transcriptions.
Currently, Multi Linguis is able to create such books for more than 75 languages.
All languages presented in the Learner's Dictionaries can be found here.