61/100IFR Score
Ranked #1 because of its Google rating and service focus: 5.0★ from 40 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Best IT Consultants in Greendale, WI (2026)
122 IT consultants ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Greendale: Ontech Systems, Inc., IFR Score 61/100; 5.0★ from 40 Google reviews.
- 6
Most-reviewed: Absolute Computer Systems, 191 Google reviews at 4.8★, the most of 122 ranked; ranked #6.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
122 Greendale IT consultants are ranked here by IFR Score, from nine published factors. 34 open Saturdays and 19 open Sundays, based on posted hours. The median Google rating is 4.9★ across 122 rated IT firms.
Top 10 IT consultants in Greendale at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ontech Systems, Inc. | 61 | 5.0★ (40) | Milwaukee, 15 mi away | — | Overall |
| 2 | Redbird Security | 61 | 5.0★ (44) | Menomonee Falls, 18 mi away | — | — |
| 3 | PC LAN Services | 61 | 5.0★ (88) | Milwaukee, 5 mi away | Sat · Sun · Evenings | — |
| 4 | TSR Solutions | 60 | 5.0★ (51) | Cedarburg, 24 mi away | — | — |
| 5 | CTaccess, Inc. | 59 | 4.8★ (22) | Brookfield, 10 mi away | — | — |
| 6 | Absolute Computer Systems | 58 | 4.8★ (191) | Kenosha, 26 mi away | Sat · Sun | Most reviews |
| 7 | Collett Systems LLC | 58 | 5.0★ (41) | West Bend, 34 mi away | — | — |
| 8 | AIR Technology Services | 58 | 5.0★ (15) | Waukesha, 11 mi away | — | — |
| 9 | Core Computer Solutions | 58 | 4.2★ (5) | Milwaukee, 8 mi away | Sat · Sun | — |
| 10 | Valiauga Technology Group | 58 | 4.7★ (22) | Racine, 18 mi away | — | — |
The 122 best IT consultants in Greendale, 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.
Based in Menomonee Falls, 18 mi away
61/100IFR ScoreRanked #2 because of its Google rating and service focus: 5.0★ from 44 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Milwaukee, 5 mi away
61/100IFR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 88 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Cedarburg, 24 mi away
60/100IFR ScoreRanked #4 because of its Google rating and service focus: 5.0★ from 51 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Brookfield, 10 mi away
59/100IFR ScoreRanked #5 because of its Google rating and service focus: 4.8★ from 22 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Kenosha, 26 mi away
58/100IFR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 191 Google reviews, the most in Greendale.
Based on 8 of 9 factors; recency not yet collected.
Based in West Bend, 34 mi away
58/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 41 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Waukesha, 11 mi away
58/100IFR ScoreRanked #8 because of its Google rating and service focus: 5.0★ from 15 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Milwaukee, 8 mi away
58/100IFR ScoreRanked #9 because of its Google rating and service focus: 4.2★ from 5 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Racine, 18 mi away
58/100IFR ScoreRanked #10 because of its Google rating and service focus: 4.7★ from 22 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in West Bend, 32 mi away
57/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 29 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Oconomowoc, 26 mi away
57/100IFR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 65 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Waukesha, 12 mi away
57/100IFR ScoreRanked #13 because of its Google rating and service focus: 4.8★ from 13 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Greendale
57/100IFR ScoreRanked #14 because of its Google rating and service focus: 4.7★ from 3 Google reviews, listed on Google as “Computer consultant”.
Based on 7 of 9 factors; recency and availability not yet collected.
Based in Milwaukee, 8 mi away
56/100IFR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 27 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#16 BadgerLayer
Based in Whitewater, 38 mi away
56/100IFR ScoreRanked #16 because of its Google rating and review volume: 5.0★ from 68 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Waukesha, 12 mi away
56/100IFR ScoreRanked #17 because of its Google rating and service focus: 4.6★ from 10 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
#18 TechJoy
Based in Muskego, 11 mi away
56/100IFR ScoreRanked #18 because of its Google rating and service focus: 5.0★ from 8 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in West Bend, 31 mi away
56/100IFR ScoreRanked #19 because of its Google rating and service focus: 5.0★ from 17 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
#20 PC Tech Worx
Based in West Allis, 4 mi away
56/100IFR ScoreRanked #20 because of its Google rating and review volume: 5.0★ from 79 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#21 Proformance PC
Based in Burlington, 18 mi away
55/100IFR ScoreRanked #21 because of its Google rating and review volume: 4.7★ from 103 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#22 ManagePoint
Based in Wauwatosa, 8 mi away
55/100IFR ScoreRanked #22 because of its Google rating and review volume: 4.9★ from 73 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Milwaukee, 8 mi away
55/100IFR ScoreRanked #23 because of its Google rating and service focus: 4.3★ from 6 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
#24 LeadingIT
Based in Woodstock, 49 mi away
55/100IFR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 75 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#25 Alpha Geeks
Based in Oak Creek, 5 mi away
55/100IFR ScoreRanked #25 because of its Google rating and review volume: 4.8★ from 77 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
IT consultants ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 122 ranked IT consultants here; the rest are on their profiles.
Also serving Greendale
20 more IT consultants within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| A.I. I.T. Guy | In Greendale | |
| Absolute Solutions Unlimited | 5.0★ (2) | 32 mi |
| ALT Technical Milwaukee | 5.0★ (2) | 8 mi |
| ARC Wisconsin | In Greendale | |
| Ascension Logistics | 4.5★ (2) | 5 mi |
| BMD Project Management | 3.5★ (2) | 9 mi |
| Data Narro Digital Forensics & E-Discovery | 3.0★ (2) | 12 mi |
| Digital Horizons | 5.0★ (1) | In Greendale |
| DMB Consulting LLC | 5.0★ (2) | 25 mi |
| ETA | 5.0★ (2) | 31 mi |
| Fluid Web Concepts | In Greendale | |
| Geekasyst | 5.0★ (2) | 7 mi |
| HerTech Solutions | 5.0★ (11) | In Greendale |
| Kelidor | In Greendale | |
| Lorum1 Systems | 4.3★ (3) | In Greendale |
| M11 Consulting | 5.0★ (2) | 28 mi |
| MCS Technologies | 4.5★ (2) | 14 mi |
| PG Tech Solutions LLC | 5.0★ (2) | 26 mi |
| Stony Creek Consulting, LLC | 1.0★ (2) | 5 mi |
| Synergic Consulting LLC | 5.0★ (2) | 19 mi |
How we ranked Greendale IT consultants
We scored 122 Greendale IT consultants 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.
| Factor | Weight | Computed from | In Greendale data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose an IT consultant
- Ask whether the consultant earns commissions or referral fees on products they recommend.
- Check experience with projects like yours, and ask for a sample deliverable.
- Agree the deliverables, timeline and price for each phase before work starts.
- Ask for two or three references from clients of your size and industry, and call them.
- Get the scope, response times and price in writing before you sign, including how you leave and get your data back.
Questions to ask an IT consultant
- Do you receive commissions from any vendor you might recommend?
- What will we receive at the end of the project?
- Who will do the work, and what similar projects have they completed?
- Do you bill hourly, per project or on retainer?
- Will you work alongside our current IT provider?
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.
IT consultants in Greendale: frequently asked questions
Who is the best IT consultant in Greendale?
By IFR Score, the highest-ranked IT consultant in Greendale, WI is Ontech Systems, Inc. with an IFR Score of 61/100. It has 5.0★ from 40 Google reviews. Redbird Security (#2) and PC LAN Services (#3) follow. We ranked 122 IT consultants on nine factors, last updated November 9, 2026.
How many IT consultants are there in Greendale?
ITFirmsRanked ranks 122 IT consultants serving Greendale, WI. 1 of them is based in Greendale; the rest serve it from nearby towns. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.
Which IT consultants in Greendale work on weekends?
34 of 122 ranked IT consultants post Saturday hours and 19 post Sunday hours. The highest-ranked open Saturdays are PC LAN Services (#3), Absolute Computer Systems (#6) and Core Computer Solutions (#9). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Greendale IT consultants have?
The median Google rating among 122 rated IT consultants in Greendale is 4.9★, with a median of 13 reviews. Absolute Computer Systems has the most, 191 reviews, and ranks #6. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank IT consultants?
Each IT consultant 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 IT consultants outside Greendale count in this ranking?
Yes, if they are within 50 mi of the Greendale city center, our service radius for IT consultants. 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 IT consultants 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 an IT consultant do?
IT consultants advise on technology plans and projects: system selection, cloud migrations, budgets, security and compliance programmes, often as a part-time or virtual CIO.
How are it consultants in Greendale ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does IT consulting, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
When does a business need an IT consultant rather than an IT provider?
For decisions and projects rather than day-to-day support: choosing a new system, planning a cloud move, setting an IT budget, preparing for an audit or reviewing an existing IT provider.
How do IT consultants charge?
By the hour, by the project or on a monthly retainer for ongoing virtual CIO work. Ask for a fixed price or a capped estimate on defined projects.
Update log for Greendale
- November 2026: IFR Scores recalculated for 122 IT consultants serving Greendale.
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