Ancona:

Octocom
Octopus Energy Group
officina meccanica
Oliver James Associates Ltd.
omnia retail
Omnissa (Italy) S.r.l.
OneOcean Group
OneStream Software LLC
Onyx Technology S.r.L.
Opdenergy
Open Smart Services
Open-Xchange Inc.
openjobmetis filiale di ancona
Openjobmetis SpA
OPLIUM
OralPro
Orbyta Group
Orchard Robotics
orienta
orienta filiale di ancona
Orienta SPA
otis elevator company
Out in Science, Technology, Engineering, and Mathematics
OutSystems, Inc.
OVERTECH Consulting
ovs
OVS S.p.A.
Oxford Instruments
Oxigent Technologies