CeLT, or its precendent CELTIE was established in a time when the USSR remained a competitive super power along with the US. Thus, CeLTIE and CeLT has accumulated much language learning material of the dozen of major languages used in former USSR.
| Language | Country | Status in Russia |
|---|---|---|
| Armenian | Armenia | migrant language (830K) |
| Azerbaijani | Azerbaijan | Official Language in the Republic of Dagestan, migrant language |
| Estonian | Estonia | N/A |
| Finnish | Finland | Recognized language in Republic of Karelia (used to be an SSR) |
| Kazakh | Kazakhstan | Recognized language in the Republic of Altai |
| Latvian | Latvia | N/A |