Kelser Corporation

Kelser Corporation
Description:
Kelser Corporation is a Connecticut-based managed IT services provider delivering proactive IT support, cybersecurity, cloud, infrastructure, and compliance solutions for small and mid-sized businesses. With over 41 years of experience, Kelser combines personalized service with enterprise-level managed IT capabilities to help organizations align technology with business goals.

Headquartered in Glastonbury, Connecticut, Kelser partners with businesses across industries including healthcare, manufacturing, financial services, nonprofit, and professional services throughout Connecticut and Massachusetts.

Kelser’s approach focuses on fast response times, clear communication, proactive support, and long-term partnership. Services include fully managed IT, co-managed IT, cybersecurity
... and compliance support, Microsoft 365 and cloud services, infrastructure management, strategic IT planning, disaster recovery, and CMMC, NIST 800-171, and HIPAA readiness and compliance support.

With an experienced team of engineers, cybersecurity specialists, Technical Alignment Managers (TAMs), Service Delivery Managers (SDMs), and strategic IT consulting leadership, Kelser works to ensure businesses have reliable, secure, and scalable technology environments that support growth and day-to-day operations.
45+ SMB SME

MSP Select USA 2026. Every year, Cloudtango honors the most successful managed service providers. For 2026, our technical analysis focused on business growth, customer satisfaction, and service offerings. By being selected, Kelser Corporation demonstrated an excellent track record delivering innovative IT services and cloud solutions while exceeding customer expectations.

Services:
Microsoft 365, Server Mgmt, SD-WAN, Networking & Wi-Fi, Modern Workplace... and 13 more
Partnerships:
Proofpoint, Dell, Datto, Citrix, Cisco, +19 […]
HQ:
Glastonbury, United States
Tel:
860.610.2200

Kelser Corporation Reviews

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“The experience with Kelser has proven them to be a key vendor for our company. With their broad industry partnerships and depth of experience and capability, Kelser holds the potential to be a prime resource for IT solutions and support.”

Shane A. Chance, North American Technical Services Mgr
Ahlstrom

“Kelser Corporation has made sourcing our IT hardware and software needs very easy. As a small business that does not employ a full time IT staff, it is very convenient to have Kelser’s technical support staff in Monarch Place to assist when the need arises. I look forward to continuing to use their services in the future.”

Sean Lavoie, VP Licensing & Corporate Sales
American Hockey League

“Kelser has been a strong partner of the American Lung Association for many years. Their team’s entrepreneurial spirit and creativity have been strong assets in our relationship. They have proven themselves to be experts in their field and strong leaders in the community.”

Jeffrey Seyler, CEO
American Lung Association of the Northeast

“Data-Mail began a partnership with Kelser to simplify our purchasing and maintenance process for workstations and servers. Over time, we had grown to understand the benefits beyond hardware procurement – when our Kelser sales rep was able to provide highly knowledgeable individuals to assist us with CITRIX and VMware architecture and upgrade projects. Today, we continue to leverage this vast knowledge base as Data-Mail looks to cloud email solutions and virtual desktop technologies.”

Fred Mangini, IT Manager
Data-Mail Inc.

“Kelser has been a wonderful partner in our recent IT Refresh, providing us with the equipment and expertise we needed to move to VDI and to expand our data center successfully. Kelser’s understanding of the non-profit space and their community involvement have only heightened our respect for them and strengthened the relationship. We consider Kelser’s ability to rapidly turn around product while simultaneously providing expert professional services from the sales team up to be a key asset in our overall IT strategy, and look forward to working with them for many years.”

Joseph D. Foran, IT Director
FSW, Inc.

“I have been very impressed with the level of professionalism and technical experience when dealing with Kelser’s team. They have never disappointed us with any of the projects we have done.”

Chris Lunde, IT Director
Greater Boston Food Bank

“Dealing with Kelser was always refreshing. There was no drama or issues. We definitely worked well together and I would look forward to working with them in the future.”

Amy Krzeminski, Team Lead, Help Desk – IT Services
Knights of Columbus

“Being a small company, Kelser still treats you as if you are their biggest client. Love the inside sales team where you receive a quick response time and they are always pleasant and very helpful when calling for help with anything!”

Christine Wagner, Office Administrator
Law Offices of Henry J. Kroeger III

“Kelser has mastered the intricacies of our unique setup as a small business. They continually come up with new and innovative ways to solve our most challenging issues. Their support team could not be more responsive or efficient.”

Nathan Grube, Executive Director
Travelers Championship

“Kelser has proven to be a valuable partner for Webster Bank over the past two years. They are quick to respond to my requirements with custom, non-“cookie-cutter” solutions. I have come to depend on them for their I.T. expertise and excellent customer service.”

Lynn Wilson, IT Procurement
Webster Bank

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