IT Services and Support Agencies in Illinois

100 IT Services and Support agencies are listed in Illinois, United States. 92 have been assessed on the Agency List Score as of October 2026; the highest-ranked is Blackline at 97.5.

Ranked · 53 of 92 assessed

Ordered by Agency List Score
#1 of 92 assessed
Blackline
98

Industry-specific IT solutions with advanced cybersecurity and cloud services

Help Desk and SupportManaged IT Services
#2 of 92 assessed
Burwood Group
97

Expertise in IT consulting, cloud services, and cybersecurity solutions

Managed IT Services
#3 of 92 assessed
Thoughtworks
96

Global technology consultancy blending design, engineering, and AI expertise

Managed IT Services
#4 of 92 assessed
Managed PartnerCloud 9
96

SEO and PPC services for inbound lead capture and search visibility

Managed IT ServicesMicrosoft 365 Administration
#5 of 92 assessed
RKON
95

IT transformation and cybersecurity for private equity and enterprises

Backup and Disaster RecoveryHelp Desk and SupportManaged IT Services
#6 of 92 assessed
3Cloud
95

SEO and PPC services for inbound lead capture and search visibility

Managed IT Services
#7 of 92 assessed
Net Works Consulting Resources
92

Managed IT, cybersecurity, and Microsoft 365 support across Chicago and Colorado offices

Managed IT Services
#8 of 92 assessed
Administrative Resource Options, Inc (ARO)
79

SEO and PPC services for inbound lead capture and search visibility

Managed IT Services
#9 of 92 assessed
Thoughtwave Software & Solutions
79

IT managed services and software development for diverse industries

Help Desk and SupportManaged IT Services
#10 of 92 assessed
Genius Business Solutions
78

SAP digital transformation and cloud migration for Fortune 500 enterprises

Backup and Disaster RecoveryEndpoint and Device ManagementHelp Desk and Support
#11 of 92 assessed
Facet Technologies
78

Managed IT services and cybersecurity for healthcare and manufacturing

Backup and Disaster RecoveryManaged IT Services
#12 of 92 assessed
Andromeda
78

SEO and PPC services for inbound lead capture and search visibility

Endpoint and Device ManagementManaged IT Services
#13 of 92 assessed
Webit Services
78

Employee-owned IT support with managed services and cybersecurity.

Backup and Disaster RecoveryManaged IT ServicesMicrosoft 365 Administration
#14 of 92 assessed
Global Mobility Services
77

Empowering with AI-driven analytics and scalable cloud architectures

Backup and Disaster RecoveryEndpoint and Device ManagementHelp Desk and Support
#15 of 92 assessed
Aislabs
75

Managed firewalls, help desk support, and cyber training for Chicagoland organizations

Backup and Disaster RecoveryHelp Desk and SupportManaged IT Services
#16 of 92 assessed
Xcelacore
74

Driving business with AI, cloud, and custom software solutions

Backup and Disaster RecoveryEndpoint and Device ManagementHelp Desk and Support
#17 of 92 assessed
iScripts
74

Turnkey web platforms and customizable software solutions

Backup and Disaster RecoveryEndpoint and Device ManagementHelp Desk and Support
#18 of 92 assessed
Hodgson Consulting & Solutions
74

Managed IT and cybersecurity services for secure, efficient business operations

Managed IT Services
#19 of 92 assessed
LME Services
74

Managed IT and Cybersecurity for Chicagoland Businesses

Backup and Disaster RecoveryManaged IT Services
#20 of 92 assessed
Sayers
73

IT consulting for cybersecurity, cloud, and infrastructure solutions

Case Studies and Whitepapers
#21 of 92 assessed
Computer Service
73
Verified

Analytics and PPC services for inbound lead capture and search visibility

Backup and Disaster RecoveryManaged IT ServicesMicrosoft 365 Administration
#22 of 92 assessed
Coeosolutions
73

Managed networks, voice, and security for the forgotten 5000 businesses

Managed IT Services
#23 of 92 assessed
Bandwidth Simplified
73

Customized telecom and IT solutions for seamless business connectivity

Backup and Disaster RecoveryManaged IT Services
#24 of 92 assessed
Aqueity
73

Managed IT, cybersecurity, and AI governance for growing businesses since 1996

Managed IT Services

Also in Illinois · 47 not ranked here

8 have not yet been assessed on the Agency List Score. Alphabetical.
Access OneView profile →AdeptcoreView profile →Agility Network ServicesView profile →Ascent365View profile →Black Diamond SolutionsView profile →Business Knowledge SystemsView profile →CmsnetworkingView profile →CSW SolutionsView profile →CTSView profile →DP Tech GroupView profile →DVC SolutionsView profile →Easy IT SupportView profile →EmpistView profile →EQ Technology GroupView profile →ExcalTechView profile →Get In Touch CatalystView profile →Global Point IT SolutionsView profile →GuavaTechView profile →Holleb ConsultingView profile →IQ TechnologiesView profile →KB Computer ConsultingView profile →Links Technology SolutionsView profile →NapervillepcrepairView profile →Nelsons4View profile →

About this ranking

What this page ranks

This page ranks 53 of the 92 assessed IT Services and Support agencies in Illinois, United States — the ones carrying a published score — out of 100 listed.

The score measures how well an agency documents its own work in public — named clients, quantified outcomes, and whether those outcomes are attributed to the agency rather than described as the client's own results. It does not measure client satisfaction, price, or availability.

Cohorts and awards

Agencies are compared within a cohort — here, IT Services and Support in Illinois, United States. A cohort must be large enough to express the band being awarded: at least 8 assessed agencies for a top 25% award, 20 for top 10%, 40 for top 5%, and 300 for top 1%. This one holds 92, so the strongest award available here is top 5%.

The 8 IT Services and Support agencies not yet assessed are listed on this page but not ranked.

A further 39 were assessed and no published evidence of their work was found, so no score is shown for them.

Read the full methodology

Paid placement

Partner agencies can buy a labelled placement block above the ranking on this page. It is always marked as paid and is never mixed into the ranked list.

Placement is paid; it does not affect the ranking, cohort membership, or any agency's score. Ranking position, cohort membership and the score itself are not for sale.

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Questions

How many IT Services and Support agencies are in Illinois, United States?
100 are listed on Agency List in Illinois, United States. 92 of them have been assessed on the Agency List Score as of October 2026, and 53 of those carry a published score.
Which IT Services and Support agency in Illinois, United States is ranked highest?
Blackline, with an Agency List Score of 97.5, ranks #1 of 92 assessed agencies in IT Services and Support in Illinois, United States.
Why are 47 IT Services and Support agencies listed here but not ranked?
8 of the 100 listed have not yet been assessed on the Agency List Score. A further 39 were assessed and no published evidence of their work was found, so no score is shown for them. They each have a profile and are listed below the ranking, alphabetically, rather than being hidden or mixed into it.
How is the ranking determined?
By Agency List Score, within the IT Services and Support in Illinois, United States cohort of 92 assessed agencies. The score is computed from evidence published on each agency's own website: named clients, quantified outcomes, and whether the outcome is attributed to the agency. Paid placement does not affect it.