| Blocksense Network | |
| Blue Point Digital Ltd | |
| Board of European Students of Technology Sofia | Sofia |
| BORA Solutions | |
| Brand Activator | |
| Brand New Ideas | Sofia |
| Brand New Vision | Sofia |
| Breend Digital Agency | |
| BRIGHT | Sofia |
| BrightCap Ventures | Sofia |
| British Bulgarian Business Association | Sofia |
| Broadteam | |
| Browserbite OOD | |
| Browswave | |
| Browswave JSC | Sofia |
| BSH Ltd | Sofia |
| BTS One | Varna |
| Bulbera | Sofia |
| Bulcode | Sofia |
| Buldocs | Sofia |
| Bulgaria Innovation Hub | |
| Bulgaria Sat | |
| Bulgaria Webdesign | Sofia |
| Bulgarian Association of Software Companies | Sofia |
| Bulgarian Center for Women in Technology | Sofia |
| Bulgarian Centre of Women in Technology | Sofia |
| Bulgarian Design Group | Sofia |
| Bulgarian Fintech Association | Sofia |
| Bulgarian Java User Group | Sofia |
| Bulgarian Private Equity and Venture Capital Association | Sofia |
| Bulgarian Stock Exchange | |
| Bulgarian System Integration | Sofia |
| Bulgartel | Sofia |
| Bulhostpro.net | Sofia |
| Bullpros Consulting | Sofia |
| Bulmag EAD | Sofia |
| Bulpros Consulting JSC | Sofia |
| Bulsatcom | Sofia |
| Bulsis | Sofia |
| BulSite Net | Sofia |
| BulVentures | Sofia |
| Burgas Free University | Burgas |
| Burgas IT | Sofia |
| Business Park Sofia | Sofia |
| Businessmap | Sofia |
| Calipers | Sofia |
| Camplight Ltd | |
| Campus X | |
| Carista | Sofia |
| CashCredit | Sofia |