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Best Managed IT Service Providers in Belleville, ON (2026)

38 managed IT service providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Belleville: Onit, IFR Score 62/100; 4.9★ from 66 Google reviews.

  2. 9

    Most-reviewed: CompuClinic, 411 Google reviews at 4.9★, the most of 38 ranked; ranked #9.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

38 Belleville managed IT service providers are ranked here by IFR Score, from nine published factors. 8 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.9★ across 38 rated IT firms.

Top 10 managed IT service providers in Belleville at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 managed IT service providers in Belleville at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1Onit624.9★ (66)Belleville—Overall
2ChoiceCom Networks & Communications Ltd.615.0★ (42)Belleville——
3Acadian Computer Service604.9★ (165)Kingston, 66 km away——
4allCare IT - Cyber Security & IT Solutions595.0★ (101)Kingston, 66 km away——
5Bay Technology Solutions595.0★ (19)Belleville——
6KonnectCraft585.0★ (24)Ottawa, 43 km awaySat · Evenings—
7C3 Solutions575.0★ (24)Prince Edward, 26 km away——
8Nesda Technologies Ltd563.9★ (11)Belleville——
9CompuClinic554.9★ (411)Peterborough, 74 km awaySatMost reviews
10MicroAge Belleville555.0★ (5)Belleville——

The 38 best managed IT service providers in Belleville, ranked

Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

  1. Ranked #1 in Belleville

    #1 Onit

    Based in Belleville

    62/100IFR Score

    Ranked #1 because of its Google rating and service focus: 4.9★ from 66 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 66 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    53b Grills Rd, Belleville, ON K8N 4Z5
  2. Based in Kingston, 66 km away

    60/100IFR Score

    Ranked #3 because of its Google rating and service focus: 4.9★ from 165 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 165 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    632 Norris Ct, Kingston, ON K7P 2R9
  3. Based in Belleville

    59/100IFR Score

    Ranked #5 because of its Google rating and service focus: 5.0★ from 19 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 19 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    43 Edgehill Rd, Belleville, ON K8N 2K8
  4. Based in Ottawa, 43 km away

    58/100IFR Score

    Ranked #6 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 24 Google reviews
    Hours
    Mon–Sat 9 AM–8 PM · Sun closed
  5. Based in Prince Edward, 26 km away

    57/100IFR Score

    Ranked #7 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 24 Google reviews
    Hours
    Mon–Fri 8 AM–4 PM · Sat–Sun closed
    Address
    206 Picton Main St Unit 1E, Prince Edward, ON K0K 2T0
  6. Based in Belleville

    56/100IFR Score

    Ranked #8 because of its Google rating and service focus: 3.9★ from 11 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 3.9★ from 11 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    250 Sidney St, Belleville, ON K8P 3Z4
  7. Based in Peterborough, 74 km away

    55/100IFR Score

    Ranked #9 because of its Google rating and review volume: 4.9★ from 411 Google reviews, the most in Belleville.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 411 Google reviews
    Hours
    Mon 9 AM–5:30 PM · Tue 9 AM–5 PM · Wed–Fri 9 AM–5:30 PM · Sat 10 AM–2 PM · Sun closed
    Address
    150 Lansdowne St E, Peterborough, ON K9J 7N9
  8. Based in Belleville

    55/100IFR Score

    Ranked #10 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 5 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    415 Maitland Dr, Belleville, ON K8N 0E3
  9. Based in Kingston, 69 km away

    55/100IFR Score

    Ranked #11 because of its Google rating and review volume: 5.0★ from 159 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 159 Google reviews
    Hours
    Mon–Sun 7 AM–11 PM
    Address
    670 Sir John A. Macdonald Blvd., Kingston, ON K7K 4M7
  10. Based in Kingston, 66 km away

    55/100IFR Score

    Ranked #12 because of its Google rating and service focus: 5.0★ from 23 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 23 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    556 O'Connor Dr, Kingston, ON K7P 1N3
  11. Based in Kingston, 65 km away

    54/100IFR Score

    Ranked #13 because of its Google rating and service focus: 5.0★ from 21 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 21 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    780 Midpark Dr Unit 205, Kingston, ON K7M 7P6
  12. Based in Kingston, 66 km away

    54/100IFR Score

    Ranked #14 because of its Google rating and service focus: 4.8★ from 25 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 25 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    1064 Gardiners Rd, Kingston, ON K7P 0G1
  13. Based in Kingston, 65 km away

    53/100IFR Score

    Ranked #15 because of its Google rating and service focus: 4.9★ from 12 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 12 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    708 Arlington Park Pl, Kingston, ON K7M 7N7
  14. Based in Kingston, 72 km away

    52/100IFR Score

    Ranked #17 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer support and services”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 5.0★ from 5 Google reviews
    Address
    2 Gore St, Kingston, ON K7L 2L1
  15. Based in Kingston, 72 km away

    52/100IFR Score

    Ranked #19 because of its Google rating and service focus: 3.9★ from 16 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 3.9★ from 16 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    80 Queen St Office 124, Kingston, ON K7K 6W7
  16. Based in Kingston, 70 km away

    52/100IFR Score

    Ranked #20 because of its Google rating and service focus: 5.0★ from 9 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 9 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    299 Concession St #202, Kingston, ON K7K 2B9
  17. Based in Peterborough, 77 km away

    52/100IFR Score

    Ranked #21 because of its Google rating and service focus: 4.1★ from 15 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.1★ from 15 Google reviews
    Hours
    Mon–Fri 8:30 AM–5:30 PM · Sat–Sun closed
    Address
    267 Stewart St, Peterborough, ON K9J 3M8
  18. Based in Belleville

    51/100IFR Score

    Ranked #22 because of its Google rating and service focus: 4.6★ from 8 Google reviews, listed on Google as “Computer repair service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 8 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    393 Sidney St Unit 7, Belleville, ON K8P 3Z9
  19. #23 Techq

    Based in Kingston, 69 km away

    50/100IFR Score

    Ranked #23 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 4 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    83 Terry Fox Dr #5, Kingston, ON K7M 8N4
  20. Based in Greater Napanee, 60 km away

    50/100IFR Score

    Ranked #24 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
  21. Based in Kingston, 66 km away

    49/100IFR Score

    Ranked #25 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1050 Gardiners Rd, Kingston, ON K7P 0G1

All 38 managed IT service providers

#1 to #25 are shown in full above. Here are #26 to #38, in IFR Score order; each links to its profile.

managed IT service providers in Belleville, ranks 26 to 38
RankBusinessIFR ScoreGoogle ratingDistance
26Response I.T.484.9★ (57)72 km
27Port hope Cellphone Plus -- Phone, Laptop, Tablet - Sales & Repair485.0★ (19)77 km
28beONix Technology474.7★ (6)In Belleville
29Digital TM472.7★ (3)19 km
30Hi-Tech Solutions474.8★ (17)43 km
31Tech'd Out Technology Services464.8★ (20)78 km
32Bay Systems Technologies Inc464.0★ (4)In Belleville
33Life's a Glitch464.4★ (9)77 km
34Brock IT | IT Services465.0★ (5)66 km
35PC+NET Computer services435.0★ (6)76 km
36Go2ComputerGuy434.6★ (9)77 km
37Upper Canada Office Systems424.4★ (5)69 km
38Hosting Controller Inc415.0★ (3)70 km

Also serving Belleville

20 more managed IT service providers within 80 km that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.

Unranked managed IT service providers serving Belleville
BusinessGoogle ratingDistance
Balamb IT Solutions5.0★ (2)74 km
Buchanan Technology Consultants5.0★ (2)In Belleville
Call-A-Geek4.5★ (10)In Belleville
ChoiceCom Networks & Communications Ltd5.0★ (2)49 km
CloudVanguard IT - Managed IT Services Company5.0★ (2)69 km
Comp Doc Computers4.7★ (14)In Belleville
Freelance Arcade Computer Repairs5.0★ (13)In Belleville
In-Home Technical Services5.0★ (2)In Belleville
Interlink Computer Services5.0★ (2)61 km
Ireton Software SolutionsIn Belleville
Latour IT Services5.0★ (2)75 km
Live Tech Solution5.0★ (2)68 km
Matthew Mott, IT Consultant5.0★ (1)10 km
Mehul Computer Services4.9★ (1,056)In Belleville
Nesda Cloud CanadaIn Belleville
On-Site Computer ServicesIn Belleville
Proxigo TechnologiesIn Belleville
Right Click Computer Sales5.0★ (43)In Belleville
Star Tek Computer Services4.5★ (2)67 km
Technowiz IT Services5.0★ (2)79 km

How we ranked Belleville managed IT service providers

We scored 38 Belleville managed IT service providers on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.

Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn Belleville data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a managed IT service provider

  1. Ask for a sample service-level agreement and compare response times, support hours and exclusions.
  2. Check how backups are done and tested, and ask when they last restored a client’s data.
  3. Ask which security tools are included and which cost extra (MFA, endpoint protection, email filtering, staff training).
  4. Make sure you, not the firm, own your accounts, domain names and licences.
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. Get the scope, response times and price in writing before you sign, including how you leave and get your data back.

Questions to ask a managed IT service provider

  • Is the price per user, per device or a bundle, and what is not included?
  • What are your response times for urgent, normal and low-priority tickets?
  • Is your help desk in-house or outsourced, and what are its hours?
  • How do you back up our data, how often do you test restores, and where are the copies kept?
  • Which security tools are included, and do you monitor alerts after hours?
  • What happens to our passwords, documentation and data if we leave?
  • Can you give us references from clients of our size and industry?

Terms explained

MSP (managed service provider)
A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
Co-managed IT
An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
Break-fix
IT support paid per incident or per hour, with no monthly agreement.
SLA (service-level agreement)
The contract terms for response and resolution times, uptime and support hours.
Help desk
The support line staff call or email for IT problems.
RMM
Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
vCIO
A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
MSSP
A managed security service provider: a firm that monitors and manages security tools around the clock.
EDR / MDR
Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
MFA
Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
Penetration test
An authorised, simulated attack on your systems to find weaknesses before criminals do.
SOC 2
An independent auditor’s report (AICPA standard) on a service provider’s security controls.

Managed IT service providers in Belleville: frequently asked questions

Who is the best managed IT service provider in Belleville?

By IFR Score, the highest-ranked managed IT service provider in Belleville, ON is Onit with an IFR Score of 62/100. It has 4.9★ from 66 Google reviews. ChoiceCom Networks & Communications Ltd. (#2) and Acadian Computer Service (#3) follow. We ranked 38 managed IT service providers on nine factors, last updated November 9, 2026.

How many managed IT service providers are there in Belleville?

ITFirmsRanked ranks 38 managed IT service providers serving Belleville, ON. 8 of them are based in Belleville; the rest serve it from nearby towns. Another 20 within 80 km are listed but not ranked yet. Counts are as of November 2026.

Which managed IT service providers in Belleville work on weekends?

8 of 38 ranked managed IT service providers post Saturday hours and 4 post Sunday hours. The highest-ranked open Saturdays are KonnectCraft (#6), CompuClinic (#9) and TotalTech (#11). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Belleville managed IT service providers have?

The median Google rating among 38 rated managed IT service providers in Belleville is 4.9★, with a median of 16 reviews. CompuClinic has the most, 411 reviews, and ranks #9. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank managed IT service providers?

Each managed IT service provider gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.

Do managed IT service providers outside Belleville count in this ranking?

Yes, if they are within 80 km of the Belleville city centre, our service radius for managed IT service providers. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.

Can managed IT service providers pay to rank higher on ITFirmsRanked?

No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.

What does a managed IT service provider do?

Managed IT service providers (MSPs) run a business’s computers, servers, network, Microsoft 365 or Google accounts, backups and help desk for a monthly fee, or provide IT support by the hour.

How are managed it service providers in Belleville ranked?

By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does managed IT services and IT support, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.

What should a managed IT agreement include?

At minimum: help desk support for your staff, monitoring and patching of computers and servers, backups that are tested, security tools such as endpoint protection and multi-factor authentication, and a named contact. The agreement should state response times, support hours and what counts as out of scope.

Is managed IT priced per user or per device?

Both models are common, and some firms sell tiered bundles. Per-user pricing suits staff with several devices; per-device pricing suits shared computers. Compare quotes on the same number of users, devices and servers.

How long are managed IT contracts?

Often one to three years, sometimes month to month. Check the notice period, any early-termination fee and how the firm hands over passwords, documentation and data when the contract ends.

Update log for Belleville

  1. November 2026: IFR Scores recalculated for 38 managed IT service providers serving Belleville.