Technology is the heart of all business,

and we are the tech doctors.

Technology Consulting in Illinois and the Tri-State Area

Our Approach

SINC is the only technology firm in southern Illinois that staffs Microsoft, Apple, Xerox, A+, Dell, and Cisco certified technicians, allowing us to provide the best services and expertise in the region.

We pride ourselves on quick response times. Whether it’s a minor issue or a big emergency, you can count on us taking care of it quickly, arriving promptly, and keeping in touch as the problem is tackled.

More About SINC 

What Our Clients Say

“The size of our company does not allow us to have our IT people on staff, so we have to outsource our needs... SINC has been our IT partner from the beginning. The crew communicates with us in a way we can understand and makes it fast and easy for us to make decisions regarding our network system and associated IT items. I would recommend SINC to any business that needs IT support.”

J. Cameron Donahue, Manager

1Source Material Handling

What Our Clients Say

“Before we hired SINC, our network was limping along. It was significantly misconfigured and just plain didn’t run properly. SINC came in, gave us a detailed assessment of the situations, and provided us with options. We chose to have our existing equipment overhauled. SINC took care of much of the job over a weekend so it minimized the amount of interference with our day-to-day work. Now we have our email hosted on our server, proper user security, nightly backups, antivirus protection, etc. We are on a Monthly Maintenance Agreement, which means that our bill is the same no matter how many times we call for support. Our previous computer guy always seemed like he was too busy to help us but when we call SINC, they always take care of us very promptly. We are glad we made the switch and are sure you will be too!”

John Taylor, President (retired)

Laborers’ Local 773

What Our Clients Say

“Dave Mack has been taking care of our computer network for about a decade, from back when we used to have a server running the Novell operating system. He has worked for several different companies over those years and we’ve always stuck with him because we know we can count on him to take care of us promptly and keep our network up and running. We subscribe to SINC’s Monthly Maintenance Agreement which also includes the Offsite Backup service and hosting for our websites. One of the nice things about the guys at SINC is that if we have questions, they answer them in a way we can easily understand. Some computer guys sound like they’re speaking a foreign language, but not the SINC guys. We have complete confidence in Dave and the rest of the crew at SINC. Their professionalism, attention to detail and prompt service make taking care of our IT issues and maintenance an easy task. I would recommend them to any business that needs computer support.”

Jim Morgan, President \ Owner

Morgan Commercial Structures

What Our Clients Say

“SINC is one of our most important business partners! As the region’s source for quality Xerox solutions, we rely on the expertise and quick response of Dave Mack and his company in order to facilitate the installation of our most advanced office products. SINC’s efficient and timely response allows us to implement printing and scanning solutions at the time of delivery instead of having our customers wait to use their new Xerox product. Our decision to partner with Dave and SINC has helped us grow our Xerox business and I would highly recommend the IT services at SINC for all your business computing needs.”

Philip Schaefer, Philip Schaefer

Heartland Office, Inc.

What Our Clients Say

“J & L Robinson Construction Co has been working with Dave Mack with SINC since he started the company. We had previously worked with him for four years when he was with another company. He helped setup and service our current computer network. Dave has helped with our business software installation, upgrades and maintenance. (Timberline accounting, Prolog project management, Microsoft Exchange email, Winest estimating and remote network access). Our computer network and business software is very critical for our daily operation. Dave has always responded quickly to resolve any problems that we have had to keep our business in operation.”

David G. Robinson (Jerry),

J & L Robinson Construction Company

What Our Clients Say

“Kingery & Associates, Inc. located in Carmi, IL. has been a client of SINC since they opened in September 2010. Prior to that Dave provided service to our company for 4 years while he was employed with another company. We appreciate the prompt response we get when we have a problem arise and if it is an emergency they are very quick to tend to the problem. We run on a network that requires access for remote users, Microsoft Exchange email, and we use QuickBooks Enterprise 2011. Thanks for everything you do, it gives us peace of mind knowing that you are there to provide excellent service so that we don’t experience long periods of down time that could be very costly to our business.”

Tammy Sisco, Office Manager

Kingery & Associates, Inc.

What Our Clients Say

"I’ve been a school administrator for over 23 years now and I have experienced the digital movement in classrooms first hand so I highly recommend SINC as network analysts as they understand how important it is to maintain a consistent technological infrastructure and they are always prompt when needed. I couldn’t ask for better service."

Steve Webb, District Superintendant

Goreville Community Unit School District #1

What Our Clients Say

“SINC and its employees have been serving us for the past few years. They have excellent services and they do a great job of taking care of us on time. They also keep all our workstations and our server running at optimum efficiency. Other services they have set up for us are an Off-site Back-Up system, updating our accounting software, and keeping our email exchange server running. One of the best things I think makes them a trustworthy company is that if for some reason they make a mistake, they will do whatever is necessary to fix the problem and keep us (the customer) happy and satisfied with the service. Overall, I would recommend them to any other business.”

Jesse Boudet, Youth Leader

First Baptist Church of Murphysboro

What Our Clients Say

"Before hiring SINC our server was slow, computers were always crashing and we seemed to always get viruses. After SINC came in and did an overhaul we run smoothly and problem free. Their monitoring of our system and offsite backup gives us peace of mind. The guys are all friendly and knowledgeable, answering any questions we have by explaining everything in terms we can understand. When we call SINC they immediately address the issue. They keep our systems updated before we even realize it is needed. If an issue should arise, SINC is there immediately either fixing the issue remotely or stopping by our office. We have complete faith in SINC by giving us one less thing to worry about so we are able to focus on our clients."

Lori B. Frost, Office Manager / Paralegal

Maurizio & Sharpe Attorney's at Law

What Our Clients Say

"SINC has been a life saver to us! From networking hosted email on a server to making that stubborn printer work on a workstation, you won’t find a better qualified or professional staff. Every last component is backed up and runs flawlessly. The peace of mind and time saved is unmeasurable. And oh yeah, the people are great too! Would highly recommend SINC for all your computer/network needs!"

Eric Elliott,

Alpha Services Inc.

What Our Clients Say

"Since we are a 1:1 school district, it’s imperative that we use the best tools and tactics available in order to utilize the technology in our classrooms and that’s why we work with SINC – they are simply the best at what they do."

Steve Webb, Superintendent

Goreville Community Unit School District #1

What Our Clients Say

"E.T. Simonds has been working with SINC since 2015, we've been extremely impressed with their IT services. The technicians are professional, responsive, knowledgeable, and overall great to work with. When it comes to IT support, SINC really offers the complete IT solution for ETS."

Jeff Bickel, Lead Engineer

E.T. Simonds Construction Company

What Our Clients Say

"I am a Managing Broker for a local Real Estate office. SINC has been the caretaker for my office computer for about four years and I have been more than pleased with their service. I have always been able to reach a live person when I need one and a visit to my office is almost instantaneous if I request it. I would highly recommend their services."

Dick Hunter, Owner

Hunter Real estate

What Our Clients Say

"I have had a relationship with Dave, Ben and the rest of the SINC staff for many years. They have provided detailed IT assistance for several different businesses I am involved in, as well as my many personal technology needs. As my business needs have changed and increased, SINC built and installed several servers for us over the years, always providing exactly what we need to better operate our businesses. I have three very different business and I am always amazed at how SINC can diagnose my needs and provide exactly what I want, specific to the particular business, regardless of the situation. Most importantly is their attention to my needs in a timely manner. I have the utmost confidence in the entire SINC staff and would recommend their services for any business or personal needs."

Jim Morgan, Owner

Woodland Cabins

What Our Clients Say

"From day one, SINC has provided us with the superb IT support and tools our growing team has needed. From equipment purchasing to email and SharePoint support, and from IT infrastructure to telecommunications, SINC has proven a valuable partner for our company. Who needs an in-house IT department when you can have the benefit of a whole team of excellent IT professionals just a phone call away?"

Caleb J. Sutton, Business Operations Manager

Integritas Emergency Physician Services / Forte Hospitalist Services

What Our Clients Say

“SINC is a fantastic IT management group for our business. Their specialists are ready for us whenever we call needing help setting up a new computer for an employee, helping our staff with any computer issues, and providing excellent service to make our day to day operations run smoothly. We know we can trust SINC with our sensitive information and to get what we need done properly.”

Kaitlyn Conrad, Director of Communications

Basi, Basi, & Associates at The Center for Financial, Legal & Tax Planning, Inc.

What Our Clients Say

“Dave Mack has been taking care of our computer network for more than a decade, from back when we used to have a server running Novell. He has worked for several different companies over those years and we’ve always stuck with him because we know we can count on him to take care of us promptly and keep our network up and running. We subscribe to SINC’s Monthly Maintenance Agreement which also includes the Offsite Backup service and hosting for our websites. We have complete confidence in the crew at SINC. Their professionalism, attention to detail and prompt service make taking care of our IT issues and maintenance an easy task. I would recommend them to any business that needs computer support.”

Jim Morgan, Owner

ICSS

What Our Clients Say

“I have rental property and also a transport business. We use Quickbooks and Rental Management software. I am dependent on the accuracy are reliability of my computer and its software system. I wouldn't use anyone but SINC! The super fast service we have received is unrivaled. Dave has always been able to communicate with me (even though I am computer stupid) and give me great advice. Dave has been my “techie” “go to” person for many years. His prices are always very reasonable. The offsite backup service has taken such a weight of my mind. Although I hope to never have a computer crash or stolen I know that if the unthinkable happens I can get back all of my business info with ease. I recommend SINC to everyone (business and personal). Give them a try - I am sure you will be as pleased as I am.”

Mary Anne Davis, Owner

Meadowbrook Estates and A-1 Mobile Homes

What Our Clients Say

“I just want to let other businesses know how essential Dave Mack and SINC have been to our company. Several years ago, our computers were outdated and barely functioning. Dave was our saving grace. Not only did he show up almost immediately, he had all 6 of our computers up and running perfectly by the end of the work day! Not only that, he set up my smartphone to access all of my business essentials and set up my home office as well. Dave Mack has been servicing all of our network and computer related issues for years now and SINC will be the only IT Company we will ever use. Their knowledge, prices, promptness and customer service are unmatched by any other IT company. I will always recommend SINC to anyone in need of IT services.”

Jon Malone,

SC Rail Leasing America, Inc. A Subsidiary of Sumitomo Corporation of America

Request a Free Consultation

  • This field is for validation purposes and should be left unchanged.