София.

В София има 320 фирми.

Фирма	Работно време
LogisticsLab Ltd.
Mediahub
Melakit Ltd.
MentorMate Bulgaria
Microsoft Bulgaria
MM Solutions
Mnemonica JSC
Modularity Bulgaria - Custom Software Development
My Yellow Door
MYX
NaXex
NearSoft Europe
Neural Brothers
Nexpur
Next IT Services LTD
Next Solutions
Omnilinx
OneBit Software
P3 Bulgaria
Paytiko
Percepticus Ltd
Pitopy
PLAN A
planIT
PlayBox Neo Ltd
PlayForm
Playtech Bulgaria
Predistic Ltd.
processflows bg
Progress
Prosystems Ltd
ProVision
Proxiad SEE
Pytek
Rainbow Group BG Limited
Reactive Solutions LTD
Rebellious Software
RISK Electronics Ltd.
Robotnici
Rubber Duck
Santiment
SAP Labs Bulgaria
Schwarz Digits Bulgaria
Sciant EAD
SEEBURGER Informatik
Sensika Technologies
Sentra
SEOptimize
Shoptico
Sirma Medical Systems