# The 27 largest IT Services and IT Consulting companies in Overijssel Tamtam tracks 27 IT Services and IT Consulting companies headquartered in Overijssel. This list ranks all of them by number of employees on LinkedIn, led by Topicus, Odin Groep and JustitiΓ«le Informatiedienst. Their median headcount is 28. Half of them were founded in 2015 or later. The most common headquarters are Enschede (9), Hengelo (4) and Zwolle (4). The IT Services and IT Consulting companies in Overijssel are primarily mid-sized to large firms, with a strong focus on specialized software solutions and infrastructure. Companies like Topicus develop IT solutions for healthcare, education, and finance, while Odin Groep provides managed services and cloud solutions. JustitiΓ«le Informatiedienst focuses on information exchange for the criminal justice system, and Previder offers datacenter and colocation services. Sqills provides mission-critical software for passenger transport operators, and Cloudwise specializes in ICT solutions for education. A notable pattern among these companies is their geographical distribution. Several firms, including Odin Groep, Previder, and Cloudwise, are headquartered in Hengelo. Enschede also hosts a cluster of companies such as Sqills, Salesdock, and OneThird, indicating a concentration of IT expertise in these specific cities within Overijssel. πŸ‡³πŸ‡± Overijssel Β· 27 companies Β· Updated Nov 12, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Topicus](https://www.tamtam.ai/c/topicus) (topicus.nl)
The company develops user-friendly IT solutions that benefit healthcare, education, finance, and social sectors, aiming to empower citizens and reduce vulnerability | IT Services and IT Consulting | πŸ‡³πŸ‡± Deventer | 812 | 1998 | | 2 | [Odin Groep](https://www.tamtam.ai/c/odin-groep) (odin-groep.nl)
A group providing a secure home for IT companies and specialists, offering managed services, cloud and data center solutions, and backoffice support | IT Services and IT Consulting | πŸ‡³πŸ‡± Hengelo | 525 | 1990 | | 3 | [JustitiΓ«le Informatiedienst](https://www.tamtam.ai/c/justitiele-informatiedienst) (justid.nl)
The company provides a system for exchanging and storing information for a comprehensive view of individuals in the criminal justice system | IT Services and IT Consulting | πŸ‡³πŸ‡± Almelo | 451 | 2006 | | 4 | [Previder](https://www.tamtam.ai/c/previder) (previder.nl)
A Dutch datacenter company offering colocation services with direct connections to AMS-IX and DE-CIX, providing low-cost, high-quality solutions for various clients | IT Services and IT Consulting | πŸ‡³πŸ‡± Hengelo | 376 | 2010 | | 5 | [Sqills](https://www.tamtam.ai/c/sqills) (sqills.com)
This company provides mission-critical software for passenger transport operators, enabling dynamic pricing, inventory management, and reservations for a seamless travel experience | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 218 | 2002 | | 6 | [Cloudwise](https://www.tamtam.ai/c/cloudwise) (cloudwise.nl)
The company provides ICT solutions for education, offering support, hardware, an online learning platform, and training to simplify digital teaching | IT Services and IT Consulting | πŸ‡³πŸ‡± Hengelo | 211 | 2010 | | 7 | [Unica ICT](https://www.tamtam.ai/c/unica-ict) (unica.nl)
Innovative ICT solutions provider focused on creating value, optimizing processes, and providing digital workplace solutions, ensuring clients are future-ready and worry-free | IT Services and IT Consulting | πŸ‡³πŸ‡± Lemelerveld | 203 | 1993 | | 8 | [Topicus in Finance](https://www.tamtam.ai/c/topicus-in-finance) (topicus.nl)
A platform connecting financial stakeholders to find & execute financing solutions for consumers & entrepreneurs, offering a range of advisory services | IT Services and IT Consulting | πŸ‡³πŸ‡± Deventer | 117 | 2007 | | 9 | [Avinty - zorgvernieuwers net als jij](https://www.tamtam.ai/c/avinty-zorgvernieuwers-net-als-jij) (sdbzorgt.nl)
Avinty is a software provider in healthcare, offering innovative solutions to improve patient care with a focus on user-friendly systems | IT Services and IT Consulting | πŸ‡³πŸ‡± Oldenzaal | 95 | 2018 | | 10 | [Salesdock](https://www.tamtam.ai/c/salesdock) (salesdock.nl)
Salesdock provides a sales platform to help sellers, distributors, and suppliers optimize performance with structured information and support | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 49 | 2018 | | 11 | [Brite Wireless \| DΓ© specialist in WiFi & ICT voor het VO onderwijs en de zorg](https://www.tamtam.ai/c/brite-wireless-de-specialist-in-wifi-and-ict-voor-het-vo-onderwijs-en-de-zorg) (brite.nl)
A team of specialists providing unique and groundbreaking wireless and ICT solutions for schools and healthcare, focusing on creating awareness and addressing connectivity challenges | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 35 | | | 12 | [OneThird](https://www.tamtam.ai/c/onethird) (onethird.io)
The company utilizes optical sensors and AI to predict produce spoilage, helping retailers reduce food waste and improve inventory management | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 33 | 2019 | | 13 | [Blue-Y](https://www.tamtam.ai/c/blue-y) (blue-y.com)
Result-oriented advisors in healthcare specializing in implementing technology for future care improvements | IT Services and IT Consulting | πŸ‡³πŸ‡± Hengelo | 32 | 2017 | | 14 | [CX](https://www.tamtam.ai/c/cx-enschede) (cuex.tech)
Attract, convert, and retain more leads with Inbnd, a certified HubSpot partner focused on enhancing inbound strategies for increasing leads, deals, and ambassadors | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 28 | 2019 | | 15 | [Suneco](https://www.tamtam.ai/c/suneco) (suneco.nl)
A technology company specializing in Microsoft Net solutions, with expertise in Sitecore, Sitefinity, Umbraco, Ucommerce, and DynamicWeb They focus on digital transformation and application power | IT Services and IT Consulting | πŸ‡³πŸ‡± Zwolle | 23 | 1989 | | 16 | [Planningsagenda.nl](https://www.tamtam.ai/c/planningsagenda-nl) (planningsagenda.nl)
A unique software solution for organizations and freelancers in the field of Labor & Health, streamlining practice management with various modules | IT Services and IT Consulting | πŸ‡³πŸ‡± Enter | 20 | 2012 | | 17 | [Datacadabra BV](https://www.tamtam.ai/c/datacadabra-bv) (datacadabra.nl)
Develops data science and artificial intelligence for practical applications, saving time and costs through smart, scalable solutions for various organizations. | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 17 | 2015 | | 18 | [ScoutinScience](https://www.tamtam.ai/c/scoutinscience) (scoutinscience.com)
ScoutinScience uses the SiS-AI platform to identify high-potential findings in scientific publications, helping organizations leverage research for innovation and competitiveness | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 13 | 2020 | | 19 | [Springleaf Automation](https://www.tamtam.ai/c/springleaf-automation) (springleaf.nl)
Streamlines operations for businesses using Hyperautomation, combining RPA and AI to automate repetitive tasks and free up time for valuable work. | IT Services and IT Consulting | πŸ‡³πŸ‡± Nieuwleusen | 13 | 2020 | | 20 | [CUMLAUDE.AI](https://www.tamtam.ai/c/cumlaude-ai) (cumlaude.ai)
Creating tailored Business Intelligence and Artificial Intelligence solutions for leading organizations, unleashing the power of data-driven decision-making with a team of 16 data professionals | IT Services and IT Consulting | πŸ‡³πŸ‡± Zwolle | 13 | 2020 | | 21 | [Seven-Winds](https://www.tamtam.ai/c/seven-winds) (seven-winds.com)
Specializing in cloud services and technologies, we assist businesses of all sizes in maximizing benefits through consulting services and tailored cloud solutions | IT Services and IT Consulting | πŸ‡³πŸ‡± Almelo | 12 | 2002 | | 22 | [Disc](https://www.tamtam.ai/c/disc) (disc.dev)
Specializing in automation and software, we assist businesses in advancing through innovation with cutting-edge tools and techniques based on 25 years of experience | IT Services and IT Consulting | πŸ‡³πŸ‡± Zwolle | 7 | 1996 | | 23 | [Aime](https://www.tamtam.ai/c/aime) (meetaime.com)
This company enhances the value of work using Artificial Intelligence technology | IT Services and IT Consulting | πŸ‡³πŸ‡± Deventer | 3 | 2018 | | 24 | [AxiomaSoft](https://www.tamtam.ai/c/axiomasoft) (axiomasoft.com)
A company specializing in turn-key solutions, outstaffing services, automation of cost-centers, AI development to increase revenue, with industry experts and in-house software engineers | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 3 | 2015 | | 25 | [QuantumDot](https://www.tamtam.ai/c/quantumdot) (quantumdot.nl)
The company aims to make artificial intelligence accessible to businesses by exploring new possibilities, improving processes, delivering results, and solving complex data challenges | IT Services and IT Consulting | πŸ‡³πŸ‡± Oldenzaal | 2 | 2023 | | 26 | [Intelligent Data & Internet Of Things](https://www.tamtam.ai/c/intelligent-data-and-internet-of-things) (theidiotcompany.eu)
The company provides intelligent data and secure sensor solutions to businesses, aiming to bring control and insight while reducing environmental impact | IT Services and IT Consulting | πŸ‡³πŸ‡± Enschede | 2 | 2016 | | 27 | [Exante.ai](https://www.tamtam.ai/c/exante-ai) (exante-ai.nl)
Specialized in artificial intelligence and data science, we help organizations develop AI strategies, conduct research, provide data-driven advice, and build agile AI teams | IT Services and IT Consulting | πŸ‡³πŸ‡± Zwolle | 1 | 2020 | ## 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 12, 2026. ## More company lists in Overijssel - [The largest companies in Overijssel](https://www.tamtam.ai/l/largest-companies-overijssel) (641) - [Multinational companies in Overijssel](https://www.tamtam.ai/l/multinational-companies-overijssel) (101) - [Manufacturers in Overijssel](https://www.tamtam.ai/l/manufacturers-overijssel) (77) - [Critical infrastructure operators in Overijssel](https://www.tamtam.ai/l/critical-infrastructure-operators-overijssel) (54) - [Family-owned companies in Overijssel](https://www.tamtam.ai/l/family-owned-companies-overijssel) (54) - [Retail chains in Overijssel](https://www.tamtam.ai/l/retail-chains-overijssel) (51) - [Hardware manufacturers in Overijssel](https://www.tamtam.ai/l/hardware-companies-overijssel) (48) - [Healthcare providers in Overijssel](https://www.tamtam.ai/l/healthcare-providers-overijssel) (48) - [Logistics companies in Overijssel](https://www.tamtam.ai/l/logistics-companies-overijssel) (47) - [Hospitals and Health Care companies in Overijssel](https://www.tamtam.ai/l/hospitals-and-health-care-companies-overijssel) (44) - [Companies with in-house R&D in Overijssel](https://www.tamtam.ai/l/r-and-d-companies-overijssel) (41) - [Transportation, Logistics, Supply Chain and Storage companies in Overijssel](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-overijssel) (38) - [Truck Transportation companies in Overijssel](https://www.tamtam.ai/l/truck-transportation-companies-overijssel) (37) - [Software Development companies in Overijssel](https://www.tamtam.ai/l/software-development-companies-overijssel) (35) - [Professional services firms in Overijssel](https://www.tamtam.ai/l/professional-services-firms-overijssel) (34) - [SaaS companies in Overijssel](https://www.tamtam.ai/l/saas-companies-overijssel) (33) - [Education providers in Overijssel](https://www.tamtam.ai/l/education-companies-overijssel) (29) - [IT services companies in Overijssel](https://www.tamtam.ai/l/it-services-companies-overijssel) (28) - [Food and Beverage Manufacturing companies in Overijssel](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-overijssel) (25) - [Distributors and wholesalers in Overijssel](https://www.tamtam.ai/l/distributors-and-wholesalers-overijssel) (25) ## The same list elsewhere in Netherlands - [IT Services and IT Consulting companies in the Netherlands](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-netherlands) (690) - [IT Services and IT Consulting companies in North Holland](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-north-holland) (205) - [IT Services and IT Consulting companies in South Holland](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-south-holland) (121) - [IT Services and IT Consulting companies in North Brabant](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-north-brabant) (86) - [IT Services and IT Consulting companies in Gelderland](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-gelderland) (40) - [IT Services and IT Consulting companies in Amsterdam](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-amsterdam) (140) - [IT Services and IT Consulting companies in Utrecht](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-utrecht) (72) - [IT Services and IT Consulting companies in Rotterdam](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-rotterdam) (30) - [IT Services and IT Consulting companies in Eindhoven](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-eindhoven) (29) ## The same list elsewhere - [IT Services and IT Consulting companies in the world](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-the-world) (23,571) - [IT Services and IT Consulting companies in Europe](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-in-europe) (11,705) --- Source: https://www.tamtam.ai/l/it-services-and-it-consulting-companies-overijssel