These Ontario-based companies are managed service providers, predominantly IT services and consulting firms, alongside some software development and telecommunications companies. They range from large enterprises like OpenText, which specializes in information management, to mid-sized firms such as Compugen Inc, focused on technology-enabled solutions, and Pythian, a data and analytics services company. N-able provides software for managed service providers, while Sangoma offers communications as a service.OnX delivers technology solutions including AI and cybersecurity, and Jolera offers next-generation managed services. A notable pattern is the concentration of headquarters in major urban centers, particularly Toronto, Ottawa, and Markham, indicating key hubs for technology and IT services within Ontario.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
OpenTextopentext.com
It specializes in Information Management, assisting businesses of all sizes in securely capturing, governing, and exchanging information globally. |
22,990 | |||
| 2 |
Compugen Inccompugen.com
This company focuses on innovation, transformation, and connecting communities through human-centered, technology-enabled solutions with a strong emphasis on collaboration and making a difference |
1,644 | |||
| 3 |
N-able
Provides comprehensive software solutions for managed service providers, enabling remote monitoring, management, security, and data protection for their small and medium-sized business clients. |
1,341 | |||
| 4 |
Sangomasangoma.com
Global provider of Communications as a Service solutions for businesses, offering a diverse portfolio of reliable and flexible communication platforms with award-winning innovation and industry leadership |
604 | |||
| 5 |
Pythianpythian.com
A global data and analytics services company founded in 1997, specializing in helping organizations transform through data, analytics, and cloud solutions |
526 | |||
| 6 | 477 | ||||
| 7 |
Wipro Limited Canadawipro.com
Leading global IT consulting & BPO services provider using cutting-edge technologies to help clients thrive in the digital era |
464 | |||
| 8 |
Jolerajolera.com
This company offers next-generation managed services and solutions to MSPs and IT providers worldwide, with a focus on top-notch customer experience |
405 | |||
| 9 |
Soroc Technologysoroc.com
Technology solutions provider offering IT infrastructure deployment, consulting, managed services, staffing, maintenance, disaster recovery, and asset management services in North America |
356 | |||
| 10 |
HostPapahostpapa.ca
A customer-centric company offering reliable hosting solutions for small and medium-sized businesses, with a focus on outstanding customer service and employee development |
312 | |||
| 11 |
Nova Networksnovanetworks.com
A Canadian IT provider delivering customized solutions, expert consulting, and seamless technology optimization for clients since 1993 |
232 | |||
| 12 |
Calian IT & Cyber Solutionscalian.com
Global provider of IT & Cyber Solutions, digital healthcare, and application modernization Offering proactive, scalable solutions to drive innovation for various industries |
230 | |||
| 13 |
Group of Gold Linegroupofgl.com
Specializing in telecommunication solutions, IPTV, web-to-print, and business solutions, the group offers innovative technology products connecting people globally |
206 | |||
| 14 |
CaTECH Systems Ltd.catech-systems.com
Provider of innovative network infrastructure solutions for Data Centres, Networking, AV, Security, Rollouts, and Electrical with nationwide service locations |
149 | |||
| 15 |
IT Weaponsitweapons.ca
Provider of IT services, hybrid cloud solutions, information security, connectivity, infrastructure management, and technical support to streamline and optimize technology environments for businesses |
109 | |||
| 16 |
New Horizon System Solutions LPca.capgemini.com
Provider of consulting, IT outsourcing, data center services, infrastructure transformation, project management, virtualization, and workplace services under Capgemini umbrella |
89 | |||
| 17 |
Mid-Range Computer Group Inc.midrange.ca
A leading IT solutions provider with a strong track record, specializing in IBM, Oracle, and Veeam technologies, offering co-location, hosting, and disaster recovery services |
58 | |||
| 18 |
Frontier Networks - Broadband + Voicehellofrontiernetworks.com
This company provides simplified connectivity solutions, including broadband, voice, network security, in-store music, and colocation services to businesses nationwide |
58 | |||
| 19 |
IT Forceitforce.ca
A technology service provider specializing in IT solutions for various sectors, offering managed IT, cloud, security, and industry-specific insights since 1999 |
47 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 20 |
Urbacon Data Centre Solutionsudcsdatacentres.com
A company specializing in design, construction, operation, and maintenance of data centres, emerging as a leader in colocation services |
47 | |||
| 21 |
DataCitydatacity.ca
A privately-held company providing mission critical IT/datacenter services for corporate institutions, offering fully managed IT support for medium to large/enterprise companies |
39 | |||
| 22 |
Audcompaudcomp.com
A Canadian IT solutions provider offering managed services, cloud services, IT infrastructure, data storage, networking, software, procurement, and professional services |
34 | |||
| 23 |
Northern Micro, A Converge Companynorthernmicro.com
Provider of integrated IT solutions leveraging expertise in computing, infrastructure, and datacentre technologies Partnered with industry leaders to deliver innovative solutions and exceptional customer satisfaction |
28 | |||
| 24 |
ITM Global Servicesitmission.com
Provider of IT consulting, hardware/software procurement, and managed IT services, focusing on minimizing costs, maximizing productivity, and delivering world-class support |
23 | |||
| 25 |
KTIkearnstechnology.com
A managed services company and hardware supplier with a team of advanced developers specializing in machine learning, databases, cloud-based solutions, and design |
17 | |||
| 26 |
Insite Computer Groupinsite.ca
Provider of IT Management Services, offering tailored solutions to businesses to ensure success and reduce risks in a cost-effective manner |
10 | |||
| 27 |
Megawiremegawire.com
Industry-leading provider of managed IT services in Southern Ontario, offering customized solutions for businesses of all sizes with a comprehensive background in networking, storage, and virtualization |
10 | |||
| 28 |
IT PRO Canadaitprocanada.ca
A provider of intelligent IT solutions, including unified communications, networking, data center services, and security solutions, to help businesses grow and succeed |
9 | |||
| 29 |
CLICK-into Inc.click-into.com
Technology solutions provider specializing in IT products, professional services, and cloud solutions for enterprises, SMBs, and various industries Focus on customized solutions for business optimization |
6 | |||
| 30 |
JumpPointjumppoint.ca
A leading Canadian company providing management and transformation services for the data centre market, with a focus on innovation and partnership |
6 | |||
| 31 |
Fox IT Canadafoxit.ca
A Canadian IT service provider offering fully-managed solutions, infrastructure architecture, virtual IT leadership, security, data management, disaster recovery, and cloud services |
6 | |||
| 32 |
Nebulaarnebulaar.com
A provider of comprehensive IT consulting services, specializing in IT infrastructure, cloud hosting, help desk support, migrations, ERP systems, mobile app development, and website design |
5 | |||
| 33 |
Tri-Paragon Inc.triparagon.com
Providing a wide range of Data Centre services and products to enhance performance, reduce costs, improve reliability, and manage cybersecurity risks effectively |
4 | |||
| 34 |
Ericon Technologiesericontech.ca
A provider of Managed IT Services catering to businesses, offering comprehensive solutions to meet their technological needs and support infrastructure |
4 | |||
| 35 |
Clikkleclikkle.com
A disruptive SaaS company enabling businesses to harness the power of AI for improved productivity and global sustainability efforts |
3 | |||
| 36 |
SinghIT Services Inc.singhit.ca
Offering comprehensive IT solutions, including managed services, web services, IT security, and infrastructure planning and deployment, with a focus on client care |
3 | |||
| 37 |
DistribuCloud Technology Servicesdistribucloud.com
Provider of high quality, reliable, and flexible fully managed IT solutions with expertise in cloud computing Helping businesses adapt and thrive with technology |
2 | |||
| 38 |
Telemerge are now New Era Technology VCD, CA, Incneweratech.com
Global provider of managed technology solutions with expertise in collaboration, networking, security, cloud, and professional services across various industries worldwide |
2 | |||
| 39 |
Steartech I.T. Solutions Inc.steartech.com
This company provides comprehensive managed IT services including hardware/software management, network setup, security, backup, disaster recovery, and customer connectivity solutions |
1 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
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