София.

В София има 485 фирми.

Фирма	Работно време
Fundamental Studio Ltd.
Fuss Digital Agency
G Print
GCH Digital
GemSeek Consulting
Global Group
Global Marketing
GrowPile
guts & brains DDB
HAVAS Bulgaria
Holden assets
Httpool Bulgaria
Hub Ahead
Human Agency
Huts Group
HYPE B2B Digital Agency
Hyperzon
Idea PR and Advertising
IdeaFabrika
Ideas Bulgaria
iDEAworx Ltd.
IDO Design
IM Digital Bulgaria
In Marketing
IN Sofia / Advertising
Infoleven
Inkpression®
Innomedia
Interactive Share - M
Interimage Ltd
Internetreklama.bg
Interpartners Communications
Ipsos
ITWS Ltd.
Janev & Janev Ltd
Jasmin Design
Junction
Kam Solutions
Kavira Design
Kenga Design & Advertising
KK Advertise
Knoway
Komakom Ltd.
LaNet
Leadway Media Solutions
Lime Bulgaria
Loft D'art
M & M Vision
M3 Communications Group
MAD4you