| AZ Company | Novosibirsk |
| Azat-team | |
| B Labs | Tver |
| B2B-Center | |
| b4Soft | Moscow |
| B8 | Sakha |
| Baltic Soft | |
| Baltic University of Ecology, Politics and Law | |
| Baring Vostok Capital Partners | Moscow |
| Barter Club | |
| Bashkir State Pedagogical University named after. M.Akmully | |
| Bauman Moscow State Technical University | Moscow |
| BBK Electronics Ltd | Moscow |
| BC Soft JSC | Moscow |
| BCGSoft | Saint Petersburg |
| BeCompact | Moscow |
| Bee Pitron Group | |
| Belgorod University of Cooperation, Economics & Law | Belgorod |
| BellSoft Ltd | Saint Petersburg |
| Belmont | Moscow |
| BelSoft Moscow | Moscow |
| Bercut Ltd | Saint Petersburg |
| BEST Free Web Hosting directory | Saint Petersburg |
| Best-Hosting.net | Moscow |
| Best-Hosting.Ru | |
| Best-soft | Moscow |
| BinarySense Ltd | Belgorod |
| BINDX | |
| BIOCAD | |
| BioLink.ru | Moscow |
| Biosoft | Novosibirsk |
| Bitblaze | |
| Bitclass | |
| BitRussia | |
| Black Horse Team | |
| Blend4Web | |
| Blinger.io | |
| BoardMaps | |
| Bogdanov & Associates | Moscow |
| Bonch-Bruevich Saint Petersburg State University of Telecommunications | Saint Petersburg |
| BondSoft | Moscow |
| Bondybox | |
| Booksize.ru | Saint Petersburg |
| Boomstarter | |
| Boreskov Institute of Catalysis | |
| Bornet | Moscow |
| Botkin.AI | Moscow |
| Brain Systems | |
| Brand Analytics | |
| BraveGeeks | Mari El |