Top IT Consulting and Systems Integration (SI) Companies

Specialist IT consulting and SI covers integration and advisory work outside platform categories such as ERP, CRM, cloud or BI: security consulting and penetration testing, independent software testing, integration of niche systems such as HR, payroll or point of sale, architecture reviews and technology due diligence. A business comes here when two systems must talk and no vendor owns the problem, when an auditor or customer demands an independent assessment, or when a technology decision needs outside advice.

The firms here differ widely, so compare them on the system pairs and assessment types they have delivered, look for reviews that describe a project like yours, and match the minimum project to an assessment or a full integration.

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We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

10,000 Companies

List of the Best Other IT Consulting and SI Agencies

TelcoGuard
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TelcoGuard focuses on helping Mobile Network Operators (MNOs) globally to secure A2P SMS and voice communications. With a strong history of collaborating with over 30 operators worldwide, our solutions are vital for fostering sustainable growth in A2P SMS and voice traffic. Our cutting-edge technolo
Highlights
$5,000+
Min Project Size
50-249
Employees
Zug, Zug, Ch
Services Provided
50% Cybersecurity Assessments & Hardening
50% Other IT Consulting and SI
AI Summary
“TelcoGuard partners with global Mobile Network Operators to secure A2P SMS and voice communications, prevent fraud, ensure revenue integrity, and support sustainable traffic growth through advanced technologies.”
Steel City IT
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Steel City IT (computersheffield.com) is a computer repair and custom PC building expert located in Sheffield. They provide a range of professional services such as laptop and console repairs, custom gaming PC constructions, data recovery, and advanced hardware diagnostics, all supported by more tha
Highlights
$50-99/hr
Avg Hourly Rate
Sheffield, England, Gb
Services Provided
50% Managed IT Services
50% Other IT Consulting and SI
AI Summary
“Steel City IT, based in Sheffield, specializes in computer repair, custom gaming PCs, data recovery, and advanced diagnostics, offering expert IT support backed by 25 years' experience.”
4DEVCODING
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4DEVCODING is a software development company based in Portugal, specializing in creating innovative solutions for various industries. Our team consists of skilled and experienced professionals dedicated to delivering tailored solutions that cater to the specific needs of each client. By adopting a c
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Vila Verde, North, Pt
Services Provided+2 Services
15% Custom Web Application Development
13% Mobile App Development (iOS & Android)
5% E-Commerce Development
5% Legacy System Modernization
AI Summary
“4DEVCODING is a Portugal-based software company offering tailored web and mobile development, cloud solutions, process automation, and team outsourcing to help businesses innovate and grow.”
Blockhunters
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Blockhunters is a blockchain auditing firm focused on enhancing security within the entire ecosystem. Our team consists of experts in security, cryptography, and blockchain, specializing in the auditing and development of smart contracts and blockchain platforms. Our services include: ✅ development
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Lodz, Lodz, Pl
Services Provided
30% Custom Web Application Development
20% Backend Development
50% Other IT Consulting and SI
AI Summary
“Blockhunters is a blockchain auditing firm specializing in smart contract development, security audits, and optimization across platforms including Ethereum, Cardano, Hyperledger, and R3 Corda.”
Tobto.io
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Tobto is a modern consulting firm that specializes in providing knowledge in VR/AR technologies as well as full-stack development for mobile and web applications.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Kyiv, Kv, Ua
Services Provided
22% Custom Web Application Development
28% Mobile App Development (iOS & Android)
50% Other IT Consulting and SI
AI Summary
“Tobto.io is a consulting firm specializing in VR/AR technologies and full-stack development, delivering innovative web and mobile applications with modern expertise.”
CLOUD VENTURE
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Focusing on the convergence of education and technology, our company provides customized Learning Management System (LMS) solutions designed specifically for each client's requirements. Utilizing the adaptability and ease of use of WordPress CMS, we create engaging, scalable, and interactive digital
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Wroclaw, Lower Silesian, Pl
Services Provided
30% Custom Web Application Development
15% Mobile App Development (iOS & Android)
5% E-Commerce Development
50% Other IT Consulting and SI
AI Summary
“CLOUD VENTURE specializes in tailored WordPress-based Learning Management Systems, delivering scalable, interactive e-learning solutions that enhance educational engagement and outcomes across diverse clients.”
WebMeridian
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WebMeridian is a comprehensive Magento development agency that specializes in creating, delivering, and supporting eCommerce solutions. We utilize a variety of technologies, including Magento, Shopify, Shopware, WooCommerce, React.js, and other framework-based options, with Magento being our primary
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Little Waltham, England, Gb
Services Provided
5% Mobile App Development (iOS & Android)
15% Custom Web Application Development
30% E-Commerce Development
50% Other IT Consulting and SI
AI Summary
“WebMeridian is a Magento-focused development agency delivering comprehensive eCommerce solutions using multiple technologies like Magento, Shopify, WooCommerce, and React.js.”
Hexagon Digital Lab Private Limited
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Hexagon Digital Lab is a globally recognized company that provides innovative technology and business process services, helping organizations rethink their operations in the digital era. We assist our clients in transforming and expanding their businesses through enabling technology. Serving small t
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Zinj, Bh
Services Provided
30% ERP & CRM Development
13% Custom Web Application Development
7% Mobile App Development (iOS & Android)
50% Other IT Consulting and SI
AI Summary
“Hexagon Digital Lab Pvt Ltd delivers innovative technology solutions, including ERP, CRM, AI, mobile, and web development, empowering diverse businesses through digital transformation and advanced IT consulting.”
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shakilxvs
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Independent Website and CMS Specialist | Worldwide
Highlights
Services Provided
10% CRM Consulting and SI
10% ERP Consulting and SI
15% IT Staff Augmentation
65% Other IT Consulting and SI
AI Summary
“Shakilxvs is an independent specialist offering comprehensive website and CMS solutions globally, delivering tailored digital services with expertise and professionalism across diverse industries.”
A
APIDEVX
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At Apidevx, we focus on creating tailored API integrations, automating workflows, and developing smart chatbot solutions designed to help businesses grow more quickly and work more efficiently.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
15% CRM Consulting and SI
15% ERP Consulting and SI
10% IT Staff Augmentation
60% Other IT Consulting and SI
AI Summary
“Apidevx specializes in customized API integrations, workflow automation, and intelligent chatbot development, enabling businesses to enhance operations and accelerate growth effectively.”

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Top IT Consulting and Systems Integration (SI) Companies

List of the Best Other IT Consulting and SI Agencies

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