The successful operations of Sirma Media as a knowledge provider of electronic encyclopedias, specialized language tools and popular web-based content is also possible because of the valuable partnership relations that we managed to establish and maintain with numerous business organizations and science institutes.

Multimedia encyclopedias:

Trud Publishing House Research & Information Centre "Bulgarian Encyclopedia" under BAS (Bulgarian Academy of Sciences) National museum of history National museum of military history

Electronic dictionaries:

Trud Publishing House Oxford University Press Bibliographisches Institut & F. A. Brockhaus AG

Language tools:

Bulgarian language Institute under BAS Lexicographic Institute under BAS Electronic dictionaries Polyglot Trud Publishing House

Knowledge portal:

Trud Publishing House Research & Information Centre "Bulgarian Encyclopedia" under BAS