Great Computer Solutions (GCS / GreatSys)

About Great Computer Solutions (GCS / GreatSys)

GCS is a managed IT services provider based in Skokie, IL, delivering managed IT, cybersecurity and cloud to small and mid-size businesses across Chicago's north lakefront and the near North Shore. The firm supports both fully managed IT and co-managed IT for companies that already have internal staff.

It holds a 5-star rating across 9 verified Google reviews. Evanston sits on Lake Michigan immediately north of Chicago, anchored by Northwestern University and Endeavor Health Evanston Hospital, with a dense base of small professional practices and a 25-mile radius that reaches Skokie, Wilmette, Park Ridge and most of Chicago's north side; GCS differentiates through the largest firm on this page at 50-249 staff and the closest non-Evanston one, working from Main Street in Skokie 3.7 miles out, pairing co-managed IT and IT staff augmentation with a managed cybersecurity line that includes virtual CISO, dark web monitoring and penetration testing.

Core services span managed IT, cybersecurity and threat protection, Microsoft 365 and cloud, network management, backup and disaster recovery, and IT strategy. Typical clients are Evanston-area organizations in professional services and healthcare & medical that want 24/7 IT support and predictable monthly costs from a single accountable partner.

Services Offered

Industries Served

Why Choose Great Computer Solutions (GCS / GreatSys)

Offices

Great Computer Solutions (GCS / GreatSys) lists 4 offices. Choose one to see it on the map.

• Northbrook, IL (about 8 miles, serves Arlington Heights)
• Northbrook, IL (serves Des Plaines)
• Skokie, IL (3.7 mi from Evanston)
• Northbrook, IL

Certifications & Compliance

Frequently Asked Questions