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Top CMS Development & Customization Agencies

Marketing teams want to publish pages without filing a ticket; IT wants a site that stays secure and fast. CMS development and customization firms build the content management system that satisfies both: custom WordPress themes and plugins, Drupal sites with complex permissions, or headless setups on Contentful, Strapi or Sanity feeding a Next.js front end. Companies hire them for a replatform, a migration off a dated CMS, custom content types and workflows, or integration with a CRM, DAM or commerce platform.

Use this page to shortlist by platform first. Check each firm's certifications for the CMS you run, ask how editors will build pages after launch, and confirm who handles updates and security patches.

How this list is built

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

List of the Best CMS Development & Customization Agencies

  1. Outsrc Website logo
    Outsrc Website
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    Are you familiar with the difficulties of managing website development projects while striving to grow your agency? At Outsrc, we aim to make things easier for you. We act as your dedicated partner in website development, efficiently handling tasks and ensuring clear communication throughout the ent

    Highlights

    $1,000+

    Min Project Size

    $50-99/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “Outsrc partners with agencies to streamline WordPress website development, providing high-quality, bug-free sites, ongoing maintenance, and effective project management to foster client and agency growth.”

  2. Source369 logo
    Source369
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    We are a dedicated group of Acquia Certified developers, designers, subject matter experts, and strategists who focus solely on Drupal solutions, positioning us as your go-to resource for all Drupal-related requirements. With a strong belief in the versatility and strength of Drupal, we are ready to

    Highlights

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Pune, Maharashtra, In

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “Source369 is a team of Acquia Certified Drupal experts delivering comprehensive development, design, and strategic solutions to help clients fully leverage Drupal for diverse digital objectives.”

  3. Sitesupport Sverige AB logo
    Sitesupport Sverige AB
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    Sitesupport offers continuous website support and maintenance for businesses using WordPress, Joomla, and Laravel. Our services include managing CMS updates, plugins, daily backups, security monitoring, and performance enhancements, all for a predictable monthly fee. Located in Gothenburg, Sweden, w

    Highlights

    $100-149/hr

    Avg Hourly Rate

    2-9

    Employees

    Borlange, Se

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “Sitesupport Sverige AB provides reliable website support and maintenance for WordPress, Joomla, and Laravel platforms, offering CMS management, security, backups, and performance services across Sweden.”

  4. W
    WPCodie
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    At WPCodie, we go beyond just providing excellence—we transform the concept itself. Our outstanding premium WordPress services are closely associated with creativity and achievement, enabling our clients to gain prominence in the digital landscape.

    Highlights

    $1,000+

    Min Project Size

    $50-99/hr

    Avg Hourly Rate

    2-9

    Employees

    Manchester, England, Gb

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “WPCodie delivers premium WordPress services combining creativity and excellence, empowering clients to achieve digital prominence through innovative and high-quality solutions.”

  5. Exact Precisions logo
    Exact Precisions
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    Exact Precisions: Your Premier Choice for WordPress Web Development in the USA! Our experienced team focuses on creating customized websites that engage visitors. With eye-catching designs, seamless functionality, and effective SEO optimization, we provide complete solutions tailored to your specifi

    Highlights

    10-49

    Employees

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “Exact Precisions is a US-based web development firm specializing in customized WordPress websites, combining design, functionality, and SEO to deliver tailored digital solutions for client success.”

  6. IshYoBoy logo
    IshYoBoy
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    IshYoBoy is a group of talented and seasoned developers who are enthusiastic about WordPress.

    Highlights

    $5,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Bratislava, Bratislava, Sk

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “IshYoBoy is a team of experienced developers specializing in WordPress, delivering professional and versatile solutions across web development projects with a focus on quality and innovation.”

  7. 80s Interactive logo
    80s Interactive
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    Reach out to us for a new TYPO3 website or an upgrade to the latest TYPO3 version. We also handle numerous projects for Magento 1 and Magento 2.

    Highlights

    $5,000+

    Min Project Size

    $100-149/hr

    Avg Hourly Rate

    2-9

    Employees

    Zwanenburg, North Holland, Nl

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “80s Interactive is a Netherlands-based company specializing in custom website development, expertise in TYPO3 and Magento platforms, delivering tailored CMS design, upgrades, and software solutions.”

  8. Dev Shafiq logo
    Dev Shafiq
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    Create reliable solutions with WordPress, which supports more than 50% of all websites. Leverage our expertise in design, technology, and strategy to achieve transformative outcomes for your business.

    Highlights

    $1,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided
    100% CMS Development & Customization
    AI Summary

    “Dev Shafiq specializes in delivering reliable WordPress-based solutions, combining design, technology, and strategy expertise to drive transformative business outcomes across diverse digital platforms.”

  9. UzmanWP logo
    UzmanWP
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    UzmanWP is leading a new chapter in WordPress. Our team consists of skilled professionals with academic credentials and extensive experience, committed to continuous self-improvement on a global scale. At UzmanWP, we offer a concept that surpasses the conventional web services typically found in Tur

    Highlights

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided
    85% CMS Development & Customization
    15% Custom Web Application Development
    AI Summary

    “UzmanWP specializes in advanced WordPress solutions, combining skilled expertise and innovative strategies to enhance digital presence beyond conventional web services in Turkey.”

  10. FixRunner logo
    FixRunner
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    FixRunner.com provides comprehensive WordPress support and maintenance services for website owners. We handle troubleshooting, emergency repairs, custom development, and routine maintenance for your WordPress site, allowing you to concentrate on managing your blog or business. We can make your life

    Highlights

    10-49

    Employees

    Services Provided
    10% Custom Web Application Development
    80% CMS Development & Customization
    10% Backend Development
    AI Summary

    “FixRunner.com offers expert WordPress support, including troubleshooting, emergency repairs, custom development, and routine maintenance, enabling website owners to focus on their business without site issues.”

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Buyer's guide

Hiring CMS Development & Customization companies

What the work covers, how to judge a partner and what drives the price.

What CMS development companies build

Work falls into a few types. New builds cover information architecture, content modeling, theme or front-end development, and editor tooling such as reusable blocks and page templates. Customization projects add custom post types, fields, plugins or modules, editorial workflows with approvals, multilingual setups and role-based permissions. Migrations move content, URLs, media and redirects from one platform to another without losing search rankings. Integrations connect the CMS to CRMs, marketing automation, search, DAM and ecommerce systems through APIs.

Engagements are usually a fixed-scope project for the build, followed by a support retainer for core updates, plugin patching, backups, uptime monitoring and small changes. Agencies serving other agencies often work white-label.

A build typically moves through discovery and content modeling, design handoff, development in a staging environment, content migration, editor training and launch with redirect testing.

Chapter 1 of 3
FAQ

CMS Development & Customization FAQs

Short answers to what buyers ask before hiring a CMS Development & Customization company.

Question not covered? Ask our team

A CMS development company builds and customizes the system a business uses to publish and manage website content. That includes content modeling, themes and front ends, custom plugins or modules, editorial workflows, integrations with CRM and marketing tools, migrations from other platforms, and ongoing maintenance and security updates.

Cost depends on the platform, number of templates and content types, integrations, multilingual needs and how much content must be migrated. Builds are usually fixed-price, customization is often hourly, and maintenance runs as a monthly retainer. Most firms in this listing set a minimum project of $1,000, and some start at $5,000 for full builds.

A traditional CMS such as WordPress or Drupal manages content and renders the website in one system. A headless CMS stores content and delivers it through an API to a separate front end, apps or other channels. Headless gives developers more control and multichannel reuse, but needs a front-end team and can make page previews harder for editors.

Pick a firm with proven work on your exact platform, ideally with partner status or certified developers. Ask to see the editor experience on past builds, how they limit third-party plugins, how they handle staging and version control, and what their maintenance contract covers. A clear migration and redirect plan matters if you are replatforming.

The firms listed most often serve ecommerce, business services, information technology, healthcare, marketing and consumer products companies. Ecommerce teams connect the CMS to their store for content-led selling, healthcare organizations need accessible, permission-controlled publishing, and marketing agencies outsource CMS builds for their own clients.

The largest groups of CMS development companies on this page are in London, Ahmedabad, New York, New Delhi and Dhaka, with Lahore close behind. Ahmedabad, Dhaka and Lahore are strong in WordPress and white-label work for agencies, while London and New York firms more often take enterprise and headless projects.

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