| Name | Region |
|---|---|
| Brele | |
| Bright Box | |
| Bright Capital LLC | |
| Briskly | |
| BroaDBanD Group | Moscow |
| Broniboy | |
| Brutka | Donetsk People's Republic |
| Bryansk State University named after Academician I.G. Petrovsky | |
| Bucomp | Moscow |
| Bunin Yelets State University | Lipetsk |
| Burbon.ru | Nizhny Novgorod |
| BurnAware | Moscow |
| Business Analytica | |
| Business to Call | |
| Buy Me a Pie! | Ulyanovsk |
| Buzzoola Internet Technologies LLC | |
| Byndyusoft | Chelyabinsk |
| BytePace | Omsk |
| Bytex | |
| C++ Russia | |
| C-News | Moscow |
| CADSoftTools | Tula |
| CAE-Fidesys | |
| Calculate Ltd | Saint Petersburg |
| Campaigner, LLC | |
| Cartridgs | Moscow |
| Cccmos Group | Moscow |
| Celsus | |
| CEZEO Software | Saint Petersburg |
| ChatList.SU | Moscow |
| Chatme.ai | Novosibirsk |
| Chechen State Pedagogical University | |
| Chelyabinsk State Institute of Culture | |
| CHS-Russia | Moscow |
| Chuvashia State Institute of Culture and Arts | |
| CityNet | |
| CityService | Perm |
| CityTelecom.ru | Moscow |
| CleverData | |
| CleverPumpkin | |
| CleverStat.com | Kirov |
| Cloud.ru | |
| Cloud4Y | |
| CloudContent | |
| CloudKassir | |
| CloudPayments | |
| CMS Soft | Moscow |
| CMSaccount, Inc. | Moscow |
| CodeInside | |
| Codestetic |