Monolingual dictionaries
| name | Language | ISO 639 | formalism | state | stems | coverage | location | primary authors | 
| -2 | -3 | 
| apertium-hbs | Serbo-Croatian | sh | hbs | lttoolbox | production | 58,004 | ~90.5% | apertium-hbs (languages) | Krvoje, Filip, Fran | 
| apertium-slv | Slovenian | sl | slv | lttoolbox | production | 20,596 | ~90.5% | apertium-hbs-slv (trunk) | Krvoje, Shraier, Fran | 
| apertium-mkd | Macedonian | mk | mkd | lttoolbox | production | 30,686 | ~90.5% | apertium-mkd (languages) | Tihomir, Fpetkovski, Krvoje, Fran | 
| apertium-bul | Bulgarian | bg | bul | lttoolbox | production | 8,578 | ~80% | apertium-bul (languages) | Tihomir, Fran | 
| apertium-pol | Polish | pl | pol | lttoolbox | development |  |  | apertium-pol (languages??) | ... | 
| apertium-ces | Czech | cs | ces | lttoolbox | development | 41,199 | ~90.5% | apertium-ces (languages) | ... | 
| apertium-rus | Russian | ru | rus | lttoolbox | development | 126,833 | ~89.6% | apertium-rus (languages) | Fran | 
| apertium-ukr | Ukrainian | uk | ukr | lttoolbox | development | 10,709 |  | apertium-ukr (languages) | ... | 
| apertium-bel | Belarusian | be | bel | lttoolbox | prototype | 105,213 | ~44.6% | apertium-bel (incubator) | ... | 
Existing language pairs
Text in italic denotes language pairs under development (incubator, nursery).  Regular text denotes a functioning language pair in staging, while text in bold denotes a stable well-working language pair in trunk.