Custom TYPO3 Extension

Are you looking to enhance the functionality of your TYPO3 website? Do you have specific requirements that can't be met with off-the-shelf extensions? Welcome to our TYPO3 Extension Development Service, where we specialise in creating custom TYPO3 extensions that are designed to fit your unique needs.

We use modern TYPO3 resources to deliver innovative solutions such as Domain-Driven Design, MVC Model, Extbase/Fluid, Frontend Plugins and Backend Modules etc.

Custom Typo3 Extension

Bestseller TYPO3 Extensions

Team T3Planet takes pride in having a first-ever store in the TYPO3 world. Our customers loved TYPO3 extensions such as Slider Revolution, T3OpanAI, Backup, and more. We encourage you to explore our popular TYPO3 extensions to trust our expertise.

Explore TYPO3 Extensions

Ready-made vs Custom Extension

What are the advantages of custom extension compared to ready-made extension?

  • Specific Functionality
  • Performance
  • Scalability
  • Maintainability
  • Security
  • Integration with External Systems
  • Brand Consistency
  • Monetization
  • Tailored User Experience

What's Included in Service?


We develop Custom TYPO3 extensions allowing you to customise your website or application to meet your unique requirements, offering personalised features and experiences for your users.

Extend TYPO3 Core

Customise and expand TYPO3's core functionalities making sure your website aligns perfectly with your project's needs while staying compatible with future updates.

Extend TYPO3 Core Extensions

Extending or Modifying existing TYPO3 core extensions to match your specific use cases, maintaining the advantages of these extensions while adapting them to your needs.

Frontend Plugins

We create interactive elements for your website's front end to provide a unique and engaging user experience, ensuring your visitors stay longer and interact more with your content.

Backend Modules

Develop custom backend modules to channelise administrative tasks, automate processes, and provide intuitive interfaces customised to your organisation's workflow.

Extend TYPO3 Third-party Extensions

We Bridge functionality gaps with third-party extensions by customising them to match your requirements.

Why T3Planet?

Why T3Planet?

Bestseller TYPO3 Extensions

We are proud to have the first-ever TYPO3 templates store, with the world’s bestseller TYPO3 extensions like T3OpenAI, Backup, News Comments etc.

Quality Assurance

At T3Planet, quality is paramount. Our templates are rigorously tested to ensure they are error-free, responsive, and perform flawlessly.

Timely Delivery

We understand the importance of deadlines. Rest assured, your project will be delivered promptly, as promised.

Customer-Centric Approach

Your satisfaction is our ultimate goal. We are dedicated to meeting your needs and exceeding your expectations.

We're TYPO3 Certified

TCCD (certified developers) & TCCI (certified integrators) resources from more than 7 years of experience.

Money Back Guarantee!

We offer Money Back Guarantee not only for TYPO3 Products but services as well, which shows our commitment to providing top-notch service.

3 Steps Approach

Step 1.

Analysis, Proposal & Planning

Step 2.

TYPO3 Extension Development

Step 3.

QA, Delivery & Support

Step 1. Analysis, Proposal & Planning

We conduct a technical project analysis at the initial stage to create an estimate. Upon your confirmation, we will kick off the 
project and strategize with local and staging server environments to ensure smooth TYPO3 extension development and deployment.

Requirement Specification

1.1 Requirement Specification

In-depth review of your requirement specification of your business needs. Prepare questions and confirmations.

View Requirement
Project Proposal

1.2 Project Proposal

You’ll receive a detailed proposal, which includes Scope of work (SOW), estimation, planning, approach, and contract details.

Download Document
Kick-off, Planning & Local-setup

1.3 Kick-off, Planning & Local-setup

Initiate the project with a kick-off meeting, schedule a project, and set up locally with Docker/DDEV, Git, composer, etc.

View Schedules
Technical & Backend Usability

1.4 Technical & Backend Usability

The team prepare technical specification and backend TCA and usability of default CRUD operations of backend management.

Download Report

Step 2. TYPO3 Extension Development

We start the TYPO3 extension development process by configuring the extension key, crafting backend TCA, and developing 
frontend plugins. Ultimately, the developer will conduct a thorough checklist before handing it over to the QA team.

Initiate Extension

2.1 Initiate Extension

Kick-start the extension using the extension builder by defining the proper unique extension key and database diagram.

View Requirement
Backend Modules Development

2.2 Backend Modules Development

Convert database diagram to TCA (Table Configuration Array) to manage records in TYPO3 list module and custom module.

Sample Backend TCA
Frontend Plugin Integration

2.3 Frontend Plugin Integration

Based on business needs, develop custom frontend plugins with Flexform/TS options and Extbase/Fluid technologies.

View Plugin Configuration
Checklist of DoD

2.4 Checklist of DoD

Developers follow a concrete checklist of DoD (Definition of Done) before submitting a project to the QA team.

Download DoD Checklist

Step 3. QA, Delivery & Support

In the final stage, as part of our commitment to ensuring quality, we will furnish various reports such 
as TSR (technical standard report), QSR (quality score report) and deliver the developed TYPO3 extension for Go-live!

Technical Standard Report (TSR)

3.1 Technical Standard Report (TSR)

Prepare a technical report including composer support, scanned extension files, system error log, localization, etc.

Download TSR Report
Code Review Report (CRR)

3.2 Code Review Report (CRR)

The report contains TYPO3 code review points like PHP-PSR, PHP Stan, PHP-CS-Fixer, and TS/XLIFF/Fluid lints.

Download SSR Report
Quality Score (QSR)

3.3 Quality Score (QSR)

The QA team tests 1:1 testing with UI/UX design, functionality, cross-platform, etc. The report contains bugs/issues status.

Download QSR Report
Delivery & Support

3.4 Delivery & Support

Deliver and deploy to the staging server with post-checklist verification and provide 30 days of free support.

View Go-live Checklist

Certified TYPO3 Agency

Pricing Packages



  • Low Complexity of Features
  • 1 Backend Records
  • 1 Frontend Plugins
  • No API Integration
  • Compatible LTS
  • No Scheduer Task
  • Basic SEO
  • DevOps - Git/Docker/DDEV
  • No Backend Manual
  • Assign a dedicated technical manager
  • 30 business days support period
  • 20 hours of development & support
  • €40 per hourly rate

Buy Now €799


  • Medium Complexity of Features
  • 3 Backend Records
  • 3 Frontend Plugins
  • 1 API Request
  • Compatible LTS/ELTS
  • No Scheduler Task
  • Advanced SEO
  • DevOps - Git/Docker/DDEV
  • Backend Manual
  • Assign a dedicated technical manager
  • 45 business days support period
  • 40 hours of development & support
  • €45 per hourly rate

Buy Now €1799


  • High Complexity of Features
  • 5 Backend Records
  • 5 Frontend Plugins
  • 1 API Request/Response
  • Compatible LTS/ELTS
  • 1 Scheduler Cronjob
  • Advanced SEO
  • DevOps - Git/Docker/DDEV
  • Backend Manual
  • Assign a dedicated technical manager
  • 60 business days support period
  • 80 hours of development & support
  • €50 per hourly rate

Buy Now €3999


  1. You must provide a detailed business requirement specification for your wanted TYPO3 custom extension.
  2. We will conduct a thorough design & requirement analysis.
  3. Subsequently, we will provide you with an accurate re-estimation.


TYPO3 Years


Extension Projects


TYPO3 Members


Ready-made Extensions

Happy Customers

Customers Review

250+ Premium customers from beginners to industry leaders love T3Planet!

4.8 / 5

Niklas Neustadt

Niklas Neustadt

Your custom TYPO3 extension made a significant difference in our e-commerce platform's functionality. It not only simplified our product management but also boosted our sales. Your team's commitment to quality and innovation is unmatched.

Your team's custom TYPO3 extension not only met but exceeded our project requirements. It was a pleasure working with such a skilled and responsive team. We look forward to future collaborations.

Matthias Bieber

Matthias Bieber

TYPO3 extension you designed has improved our workflow efficiency. Your professionalism and technical expertise are highly appreciated.

Thomas Kluge

Thomas Kluge

Their team's outstanding communication, keen eye for detail, and steadfast dedication to excellence have positioned them as a cornerstone of our project's success. We are deeply appreciative of their invaluable contribution and look forward to continuing our fruitful collaboration.

Sophia Schuster

Sophia Schuster

Great communication and expertise! T3Planet delivered custom TYPO3 extension services that exceeded our expectations. Their team's responsiveness and technical proficiency made the entire process smooth and efficient.

Marco Schneider

Marco Schneider

T3Planet's custom TYPO3 extension services are exceptional! They helped me extend TYPO3's core functionalities to perfectly align with my project's needs. Their team's expertise in Domain-Driven Design, MVC Model, and Extbase/Fluid technology ensured a smooth development process and a high-quality end product. I'm extremely satisfied with their services and would choose T3Planet again without hesitation.

Uta Schweitzer

Uta Schweitzer

Working with T3Planet on my TYPO3 extension was a fantastic experience! They took the time to understand my business needs and provided expert guidance and support throughout the development process. The end result was a high-quality extension that seamlessly integrated with my TYPO3 website and provided the functionality I needed.

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Technical Expertise


TYPO3 is primarily built using PHP, and PHP remains the core language for TYPO3 extension development. Staying up-to-date with the latest PHP versions and best practices is essential for TYPO3 developers.


Various APIs and services for extension development, including Extbase, Fluid, and REST APIs.

TYPO3 Extensions

Fluid: TYPO3's templating engine, Fluid, is used for rendering dynamic content in TYPO3 extensions. Extbase: TYPO3 Extbase framework simplifies the development of TYPO3 extensions with its MVC (Model-View-Controller) architecture.

Front-end Development

HTML5/CSS3: For building modern and responsive TYPO3 templates. JavaScript: Frameworks like ReactJs, NextJs, NodeJs, AngularJs for enhancing the user interface and interactivity.


Typically using MySQL or MariaDB as the database backend. Staying current with database technologies is important for optimising performance.

Version Control

Using Git for version control in TYPO3 projects, enabling collaborative development and code management.


Dependency management tool for TYPO3 extensions and PHP libraries.

Unit Testing

Unit testing verifies the correctness of code units, checks reliability and functionality using PHPUnit, Extbase, and TDD.

Code Lints

Maintaining TYPO3 coding standards with tools like PHPCS for clean, consistent code.

Our Technology Stack

Domain-Driven Design (DDD)

Focused on aligning software design with the business domain, resulting in more robust TYPO3 solutions.

MVC Model

Following the Model-View-Controller architecture for maintainable and organised TYPO3 extensions.


TYPO3 Core APIs are essential for flexible extension development, providing essential functionalities.

Extbase Framework

Extbase framework in TYPO3 extension development helps developers to follow the Model-View-Controller (MVC) architecture.

Fluid Rendering

Fluid, TYPO3's templating engine, is a vital component for rendering dynamic content within TYPO3 extensions. It provides a flexible and efficient way to create templates.


TypoScript, TSconfig, and Yaml play vital roles for effective configuration and customisation of TYPO3 solutions.

Frontend Tech-Stack

We utilize the latest front-end technology stacks, including HTML5, CSS3, Vanilla JavaScript, and TypeScript.

Automatic Code Review with Lints:

Ensuring high code quality and adherence to TYPO3 standards.

Custom TYPO3 extension development involves creating personalised extensions or plugins that add specific functionalities to your TYPO3 website, addressing your unique business needs.

Custom TYPO3 extensions are essential when your website requires features and functionalities that are not readily available in standard TYPO3 extensions. They help you achieve a more customised and unique online presence.

Custom TYPO3 extensions can enhance your website's functionality, improve user experience, and streamline internal processes. They are designed to align perfectly with your business goals and requirements.

The development timeline depends on the complexity and scope of the project. We will provide you with a detailed project plan and timeline during the initial consultation. It generally varies from a few days to a few weeks.

The cost varies based on the complexity and features of the extension. We offer competitive pricing and will provide you with a customised quote after understanding your project requirements.

Yes, we offer ongoing support and maintenance services to ensure your custom TYPO3 extensions remain up-to-date, secure, and compatible with the latest TYPO3 versions.

Yes, we can upgrade your existing TYPO3 extensions to ensure they are compatible with the latest TYPO3 releases, providing enhanced security and performance.

Yes, we stand by the quality of our work. We offer a 100% money back guarantee making sure customer satisfaction, your custom TYPO3 extension will function as specified and meet your requirements.

Simply contact us by contact form or give us a call on +49 212 73879993  to discuss your project requirements and objectives. We will work closely with you to create a custom solution specifically to your needs. We would be happy to hear!

TYPO3 Support for your TYPO3 Needs

Do you have any questions?

Let’s connect now!