София.

В София има 320 фирми.

Фирма	Работно време
Smart Innovative Technologies
Smart Take OOD
Soft2RUN
SoftGroup
SoftOne Technologies
Software AG
Software Group
Software Lab
Software Supreme Ltd.
Speednet.BG
Stanga
Step-Soft
Sunwell Solutions
Tarya Fintech Bulgaria
Tech Outlet Ltd
Techprogress
Tek Experts
Telebid Pro Ltd.
Telelink Infra
Telesprint
TELUS Digital
Tetracom Interactive Solutions
The Wildcard
ToBeCode LTD
Torrid Lore Ltd.
TouchPoint
Treasury Intelligence Solutions Bulgaria Ltd.
Up2 Technology
Urbo Studio
Useful at Night HQ
Viasat Technology
VIV Design Ltd.
VMware Bulgaria
Vuvirt
We are you Sofia
Web Grow Studio
Websologic
Whiz
WITmind Ltd.
Xentio
Yaktor Ltd.
ZETTA SYSTEMS
AppGreat
AppitStudio
Businessmap (formerly Kanbanize)
Commerzbank Digital Technology Center Bulgaria
DraftKings Life
Evolution Bulgaria
Forterro Bulgaria
Gameloft Sofia