Cross Platform Solutions
At Addin Expert, we specialize in building versatile Office Add-ins and Google Add-ons that work seamlessly across multiple platforms. Our solutions are designed to deliver consistent performance and functionality, whether you're using desktop, web, or mobile applications. By leveraging innovative technologies, we ensure our tools enhance productivity and streamline workflows, no matter where or how you work.
Platforms We Support
One add-in, every surface. We build on the modern Office JavaScript API so your solution runs consistently across the platforms your team already uses.
Windows Desktop
Full-featured add-ins for Office on Windows, the platform most enterprises run.
macOS
The same add-in running natively in Office for Mac — no separate build.
Office on the Web
Runs right in the browser, so users get your tools without installing anything.
iOS & Android
Responsive experiences that carry your add-in to Office on tablets and phones.
The Benefits of Going Cross-Platform
One Codebase
Build once on Office.js and deploy everywhere, instead of maintaining separate desktop and web versions.
Consistent Experience
Users get the same features and interface no matter which device or platform they open Office on.
Wider Reach
Reach every user in an organisation — Windows, Mac, web, and mobile — from a single solution.
Lower Maintenance
Ship updates from the server once and every platform gets them instantly, with no reinstalls.