Thirty-seven of Guernsey's 221 professional-services firms work in IT — eleven do network services and hosting, nine do managed services and IT support, nine build software, and eight offer cyber security. Six are Microsoft Partners, one is Cisco Gold, and Logicalis launched the Channel Islands' first Security Operations Centre in 2017. —
Twelve firms — half web/digital agencies, half specialist software houses; Vega, Digimap, and Swansoft anchor the specialists.
Ten firms, all limited companies — managed services (9), cyber security (7), networks (7); oldest traces to 1896, newest 2024.
Seven firms — the oldest a 1975 Euronics electronics shop, three linked Alderney operations, and two lean repair services.
Six firms — Logicalis and SquareClouds in managed services, three web-and-hosting shops, and Quantios, a 600-client global SaaS.
Five of 37 IT firms sell advisory and project work — two managed-services groups, two software houses, one automation specialist.
Five firms, all limited companies. Logicalis (1982) launched the Channel Islands' first Security Operations Centre in 2017.
Four firms — the oldest since 1990, the newest 2017. Between them run the .gg and .je top-level domain registries.
One firm per niche, picked for editorial depth.
FinTech and RegTech software — trust, banking, regulatory reporting.
Largest IT services company — Cisco Global Gold Certified Partner & GCRA-licensed telecoms operator.
IT services provider — web hosting, design, support, computer sales
SaaS and RegTech provider — wealth management, trust, and corporate software
Managed IT and cyber security services — regulated industries focus
Managed IT services — cyber-security, network monitoring, hosted desktops.
Smart home and office technology installers — lighting, AV, heating, networks.
EPOS and IT solutions provider — hospitality, retail, distribution.
Telecommunications solutions provider — business telephony, cabling, voice/data.
IT and creative services — data, design, and development solutions
IT support shop for computer maintenance and repair
C5 Alliance is an IT consultancy, ISO 27001 certified, specialising in Microsoft platform consultancy with five Solutions Partner designations, and offering managed IT services.