61/100IFR Score
Ranked #1 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.
Best IT Consultants in Rancho Cucamonga, CA (2026)
602 IT consultants ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Rancho Cucamonga: ThinkTek, IFR Score 61/100; 5.0★ from 51 Google reviews; open 7 days a week.
- 12
Most-reviewed: Apogee Computer Technologies - By Appointment Only, 890 Google reviews at 5.0★, the most of 602 ranked; ranked #12.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
602 Rancho Cucamonga IT consultants are ranked here by IFR Score, from nine published factors. 226 open Saturdays and 134 open Sundays, based on posted hours. The median Google rating is 5.0★ across 602 rated IT firms.
Top 10 IT consultants in Rancho Cucamonga 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 | ThinkTek | 61 | 5.0★ (51) | Irvine, 33 mi away | Sat · Sun · Evenings | Overall |
| 2 | INTELI DENTAL | 59 | 5.0★ (7) | Ontario, 4 mi away | Sat · Sun · Evenings | — |
| 3 | GoHardDrive Inc | 59 | 4.4★ (249) | La Puente, 22 mi away | — | — |
| 4 | Sam's IT Solutions | 59 | 5.0★ (497) | Pasadena, 31 mi away | Sat · Sun · Evenings | — |
| 5 | The IT Professionals | 59 | 5.0★ (85) | Buena Park, 40 mi away | Sat | — |
| 6 | NetTech Computers | 59 | 4.9★ (476) | Rancho Cucamonga | Sat | — |
| 7 | Agile Enterprise Management | 58 | 5.0★ (16) | Newport Beach, 34 mi away | Sat · Sun · Evenings | — |
| 8 | Acorn IT Services | 58 | 4.8★ (27) | Ontario, 3 mi away | — | — |
| 9 | Crimson IT | Cybersecurity, Managed IT & AI Automation | 58 | 4.9★ (99) | Los Angeles, 38 mi away | — | — |
| 10 | Los Angeles Cabling | 57 | 5.0★ (4) | Hollywood, 12 mi away | Sat · Sun · Evenings | — |
The 602 best IT consultants in Rancho Cucamonga, 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 Ontario, 4 mi away
59/100IFR ScoreRanked #2 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in La Puente, 22 mi away
59/100IFR ScoreRanked #3 because of its Google rating and service focus: 4.4★ from 249 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Pasadena, 31 mi away
59/100IFR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 497 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Buena Park, 40 mi away
59/100IFR ScoreRanked #5 because of its Google rating and service focus: 5.0★ from 85 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Rancho Cucamonga
59/100IFR ScoreRanked #6 because of its Google rating and review volume: 4.9★ from 476 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Newport Beach, 34 mi away
58/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 16 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Ontario, 3 mi away
58/100IFR ScoreRanked #8 because of its Google rating and service focus: 4.8★ from 27 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Los Angeles, 38 mi away
58/100IFR ScoreRanked #9 because of its Google rating and service focus: 4.9★ from 99 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Hollywood, 12 mi away
57/100IFR ScoreRanked #10 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
#11 IT Bros
Based in Chino, 23 mi away
57/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Lakewood, 35 mi away
57/100IFR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 890 Google reviews, the most in Rancho Cucamonga.
Based on 8 of 9 factors; recency not yet collected.
Based in Irvine, 33 mi away
57/100IFR ScoreRanked #13 because of its Google rating and service focus: 4.8★ from 77 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Riverside, 14 mi away
57/100IFR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 507 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#15 Onward IT
Based in Rancho Cucamonga
57/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 13 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Rancho Cucamonga
57/100IFR ScoreRanked #16 because of its Google rating and service focus: 4.9★ from 13 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Riverside, 13 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 7 of 9 factors; recency and availability not yet collected.
Based in Ontario, 4 mi away
56/100IFR ScoreRanked #18 because of its Google rating and service focus: 4.1★ from 24 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Irvine, 32 mi away
56/100IFR ScoreRanked #19 because of its Google rating and review volume: 5.0★ from 174 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#20 Smartology Tech
Based in Home Gardens, 9 mi away
56/100IFR ScoreRanked #20 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.
#21 FundYaMental
Based in Coto De Caza, 34 mi away
56/100IFR ScoreRanked #21 because of its Google rating and service focus: 5.0★ from 22 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
#22 Helpt
Based in Irvine, 33 mi away
56/100IFR ScoreRanked #22 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
Based in Huntington Beach, 38 mi away
56/100IFR ScoreRanked #23 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 Glendale, 37 mi away
56/100IFR ScoreRanked #24 because of its Google rating and review volume: 5.0★ from 174 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#25 Xcape, Inc.
Based in Los Angeles, 38 mi away
56/100IFR ScoreRanked #25 because of its Google rating and service focus: 4.7★ from 14 Google reviews, listed on Google as “Computer consultant”.
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 602 ranked IT consultants here; the rest are on their profiles.
Also serving Rancho Cucamonga
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 |
|---|---|---|
| ABX Technology LLC | In Rancho Cucamonga | |
| Burgi Technologies | Managed IT & Cybersecurity | In Rancho Cucamonga | |
| Call Computer Techs | 5.0★ (1) | In Rancho Cucamonga |
| Empire Technologies Group Inc. | In Rancho Cucamonga | |
| Enigmatizing Networks, Inc | 5.0★ (1) | In Rancho Cucamonga |
| Hexpistol Inc. | 5.0★ (2) | In Rancho Cucamonga |
| Industrial PC Pro | In Rancho Cucamonga | |
| JT Computer Services | In Rancho Cucamonga | |
| KJB Computer Service | 5.0★ (1) | In Rancho Cucamonga |
| MAG Computer Consulting | In Rancho Cucamonga | |
| Neuron Computer Services | 5.0★ (7) | In Rancho Cucamonga |
| NYS Tech Consulting | In Rancho Cucamonga | |
| PC-Fix Computer Service | 4.8★ (49) | In Rancho Cucamonga |
| Prostratus Consulting | In Rancho Cucamonga | |
| Seguy Tech Computer Services | In Rancho Cucamonga | |
| Supreme Tech | 4.7★ (197) | In Rancho Cucamonga |
| Tech 20 Solutions Inc. | In Rancho Cucamonga | |
| The Screen Savers Technology Solutions | 5.0★ (2) | In Rancho Cucamonga |
| The Solution Seekers | In Rancho Cucamonga | |
| TNN | Managed IT Services | 4.5★ (4) | In Rancho Cucamonga |
How we ranked Rancho Cucamonga IT consultants
We scored 602 Rancho Cucamonga 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 Rancho Cucamonga 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 Rancho Cucamonga: frequently asked questions
Who is the best IT consultant in Rancho Cucamonga?
By IFR Score, the highest-ranked IT consultant in Rancho Cucamonga, CA is ThinkTek with an IFR Score of 61/100. It has 5.0★ from 51 Google reviews. It is open 7 days a week. INTELI DENTAL (#2) and GoHardDrive Inc (#3) follow. We ranked 602 IT consultants on nine factors, last updated November 9, 2026.
How many IT consultants are there in Rancho Cucamonga?
ITFirmsRanked ranks 602 IT consultants serving Rancho Cucamonga, CA. 5 of them are based in Rancho Cucamonga; 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 Rancho Cucamonga work on weekends?
226 of 602 ranked IT consultants post Saturday hours and 134 post Sunday hours. The highest-ranked open Saturdays are ThinkTek (#1), INTELI DENTAL (#2) and Sam's IT Solutions (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Rancho Cucamonga IT consultants have?
The median Google rating among 602 rated IT consultants in Rancho Cucamonga is 5.0★, with a median of 12 reviews. Apogee Computer Technologies - By Appointment Only has the most, 890 reviews, and ranks #12. 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 Rancho Cucamonga count in this ranking?
Yes, if they are within 50 mi of the Rancho Cucamonga 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 Rancho Cucamonga 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 Rancho Cucamonga
- November 2026: IFR Scores recalculated for 602 IT consultants serving Rancho Cucamonga.
- November 2026: 4 duplicate listings merged.
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