Probably the most famous dictionary of Latin abbreviations.
There are many editions of it in different languages: http://classica-mediaevalia.pl/2012/10/adriano-cappelli-lexicon-abbreviaturarum/
Computer versions
- Free online version: https://www.adfontes.uzh.ch/ressourcen/abkuerzungen/cappelli-online/characters/up/1
- Free offline version (for PC, MacOS, Linux and Android) prepared by
Training software
- Cappelli-Quiz created by