Stop building one-off integrations. Save thousands in dev costs.
No more one-off integrations. One API connects you to Xero, QuickBooks, MYOB, and more—saving thousands in dev hours and maintenance costs.

Inspired by
Let’s be honest — is this really the best way to integrate?
How to get connected in under 10 minutes
Sign Up
Create your account in seconds. Just enter your email and password to get started.
Connect
Use our API to authenticate your customer’s accounting system.
Build
Fetch data, sync invoices, and power your app in minutes.
Why developers love OpenAccounting
Fast Setup
Go from zero to production in hours — not months. Developers love how fast they can integrate and launch.
Secure by Default
Bank-grade encryption, GDPR & SOC2-friendly. We handle the compliance, so you don’t have to.
Save Engineering Hours
Maintain one integration instead of many. Spend your time improving your product, not rewriting code.
Coverage
Xero, QuickBooks, MYOB, NetSuite, Sage, and more — all from a single API.
Developer-First
Clear docs, SDKs, and a sandbox that just works.
Built by developers who've integrated every major accounting API — so you don't have to.