Our Services
Transform Office Applications with VSTO Plugin Development. Enhance Microsoft Office applications with Custom VSTO Plugin Development. Our expertise in Microsoft VSTO Solutions for Custom Office Plugins ensures seamless integration, improved efficiency, and tailored solutions for business needs.
- Setup Your VSTO Development Team Quickly – Get started within a week
- Interview Developers Before Hiring – Ensure the right fit for your project
- Onshore & Offshore Development Models – Flexible engagement models
- Commitment from Ideation to Deployment – End-to-end development support
- Full-Time Dedicated VSTO Developers – Focused resources for your project
- Time Zone Overlap for Seamless Communication – Minimum 3-hour overlap
- Custom VSTO Plugin Development for Office Suite – Word, Excel, Outlook, and more
- Flexible Engagement Models – Choose from Time & Material or Fixed Price
Build Your Custom VSTO Solution Today!
👉 Let’s enhance your productivity with a custom VSTO solution designed to meet your unique needs.
📞 Build your custom VSTO solution today!
Our VSTO Add-in Development Services
Custom VSTO Add-in Development
We design and develop feature-rich VSTO plugins tailored to your business needs, enabling better automation, reporting, and process efficiency.
Outlook VSTO Plugin Development
Enhance Outlook functionality with custom add-ins for email automation, calendar management, and workflow optimization to streamline communication.
Excel VSTO Solutions
Our Excel VSTO plugins help businesses automate data entry, reporting, and analysis, improving accuracy and saving time.
Word VSTO Add-ins
Develop powerful Word plugins for enhanced document management, content formatting, and collaboration tools to improve productivity.
VSTO Plugin Debugging & Optimization
We analyze, debug, and optimize existing VSTO plugins, ensuring high performance, security, and compatibility with the latest Microsoft Office versions.
Integration with Third-Party APIs
Our experts seamlessly integrate your VSTO plugins with CRM, ERP, cloud storage, and other enterprise solutions for extended functionality.
Why Choose US
Expert VSTO Plug-in Developers Delivering Cutting-Edge Solutions
As a top VSTO Plugin Development Company, we build scalable, high-performance, and secure solutions customized for businesses of all sizes. Our dedicated team ensures that your VSTO add-ins integrate seamlessly with Microsoft Office applications while enhancing productivity.
Key Technologies
Enhancing Productivity with Smart VSTO Plugin Solutions
MetaDesign Solutions leverages the latest Microsoft technologies to develop high-performance VSTO add-ins that enhance Office application functionality.

Languages
C#, VB.NET – Used for efficient and scalable plugin development.

Frameworks
.NET Framework, .NET Core – Ensures robust application performance.

Libraries
VSTO SDK, Office Interop API – Enables seamless Office application integration.

Cloud Services
Azure, AWS – Supports cloud-based VSTO plugin functionality.

APIs & Integration
REST, SOAP, Graph API – Enables seamless connectivity with third-party applications.
Our Solutions
Our Range of VSTO Plugin Development Services
Maximize Efficiency with Our VSTO Plugin Development
Deep Integration with Office Applications: VSTO allows for comprehensive customization and automation within Office applications, providing a native user experience.
Rich User Interface Capabilities: Utilize Windows Forms and WPF to create sophisticated and responsive user interfaces within Office applications.
Access to Full .NET Framework: Leverage the power of the .NET Framework to build robust and scalable solutions with access to a wide range of libraries and tools.
Seamless Deployment: Deploy VSTO add-ins using ClickOnce or Windows Installer, ensuring smooth installation and updates for end-users.
Enhanced Security: Implement strong security features such as code access security and digital signatures to protect add-ins and user data.
Support for Legacy Systems: Maintain compatibility with older versions of Office, ensuring continued support for legacy systems and workflows.

Hire VSTO Plugin Developer
Clear Pricing, Secure Code, Signed NDA & Hassle-Free Exit — We Keep It Simple and Transparent.
frequently asked questions
Here is a list of questions we are frequently asked as VSTO Plugin Development Company:
What is VSTO Plugin Development?
VSTO (Visual Studio Tools for Office) is a framework for building custom add-ins for Microsoft Office applications like Word, Excel, and Outlook. These add-ins enhance productivity by automating tasks and extending Office functionality.
Why should I choose VSTO over Office Web Add-ins?
VSTO add-ins offer deeper integration with Office applications, enabling advanced customization and offline functionality, unlike web-based add-ins that rely on cloud services.
How long does it take to develop a custom VSTO add-in?
The development timeline varies based on complexity, but most projects are completed within 4 to 12 weeks, ensuring a fully functional and optimized solution.
Can VSTO add-ins be deployed across multiple Office applications?
Yes, we can develop multi-application VSTO plugins compatible with Excel, Word, Outlook, and other Office apps, ensuring seamless user experience.
Do you offer support and maintenance for VSTO add-ins?
Absolutely! We provide ongoing maintenance, bug fixes, and updates to keep your VSTO add-ins optimized for the latest Office versions.
Our Capabilities
Why choose MDS for VSTO Plugin development services?

Flexible Engagement Models
Hire Dedicated Staff either full time or part time based on project needs. No long term commitment required.

Flexible Engagement Interview Developer before hire
Hire the best suited candidate for your project. Screen profiles and interview candidates before hiring.

Full Protection of IP Rights
All ownership of anything we develop for our customers is full owned by our customers. We sign strong NDA to protect IP of our customers.

Full Transparency
The customer has full access to developers working on the project, with access to time records spent on the project

Certified, Decade old Company
Founded in 2007 and now CMMi Level 3 Certified along with ISO 9001:2015 and ISO/IEC 27001:2013 Certified.

Free Trial
Every new customer is eligible to avail a FREE Trial of services for which you only pay if you are happy with the services

SLA Driven Process
We use tools and follow mature processes to make remote working efficient and collaborative.

More ROI on every $ spent
We are not only cheap on hourly rate, but also efficient hence giving our customers the best ROI on every dollar spent with us.

Access to 300+ Engineers Pool
With a combined strength of 300+ Engineers, our team consummate in their field of expertise to deliver high quality, robust software development and testing services