Blog

January 30, 2026

How to Build Spiris Integration With API.1

In this guide, we will explore how to implement a robust Spiris integration using Zwapgrid API.1. This approach allows you to standardize your development process—meaning you build the logic once, and it works for Spiris as well as any other supported accounting system.

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Hamada Aljarrah
September 10, 2025

How to Build Fortnox Integration With API.1

Fortnox is Sweden’s leading accounting platform, used by thousands of businesses every day. If you’re working on a fintech, SaaS, or banking solution, integrating with Fortnox isn’t a matter of if—it’s a matter of when. In this post, we’ll look at how you can streamline that process using the Zwapgrid API.

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Hamada Aljarrah
September 10, 2025

Fortnox Integration: Build vs Buy in 2025

Fortnox is the most widely used accounting system in Sweden. If you’re building a fintech, SaaS, or bank product, chances are you’ll need to connect to Fortnox data sooner or later. The question is: do you build that integration yourself, or do you buy into a platform that already solved it?

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Leo Berghald