API integration web development Sweden

100+ integrations. One team.

BankID, Stripe, Fortnox, Swish, Klarna, Visma and every other API your system needs. We connect systems that talk to each other so you can stop doing things manually.

First-mover opportunity

Sverige-ID integration -- ready before launch

Sverige-ID launches 1 December 2026 as the Swedish government's alternative to BankID. With 8.7 million BankID users expected to migrate over time, it is one of the biggest identity shifts in Sweden in decades. We are preparing integration now so your users can authenticate from day one.

Identity and login

BankID integration and e-identification

Most requested

BankID

Swedish e-identification

BankID integration for web applications and BankID authentication. We have implemented BankID in production systems with millions of logins.

New in 2026

Sverige-ID

New government e-ID

Sverige-ID launches 1 December 2026 as the government-issued alternative to BankID. We are already preparing integrations for early adopters.

Freja eID

Alternative e-identification

Freja eID integration for systems that require an alternative to BankID.

Payments

Stripe, Swish and Klarna checkout integration

Popular for SaaS

Stripe

Payments and subscriptions

Stripe payment integration: one-time payments, subscriptions, invoicing and marketplace payouts.

Swish

Instant payments

Swish business payment integration for e-commerce, bookings and B2B flows. Real-time confirmation directly in your system.

Klarna

Checkout and instalment

Klarna checkout integration with Pay Now, Pay Later and Klarna Kosma for bank transaction data.

Nets / Dibs

Card terminal and online

Nets Easy integration for online card payments and hybrid solutions with physical terminals.

PayPal

International payments

PayPal and Braintree for international e-commerce and subscription models.

Adyen

Enterprise payments

Adyen for enterprise merchants with high-volume transactions and multicurrency needs.

Accounting and ERP

Fortnox API integration and accounting systems

Connect Fortnox with your own system, automate business system integration and eliminate double data entry between your platform and your accounting.

Most used in Sweden

Fortnox

Accounting and invoicing

Fortnox API integration: automate invoicing, sync orders and connect Fortnox with your own system without manual work.

Visma

Accounting system

Visma integration: Visma eAccounting, Visma Administration and Visma Business via API.

Björn Lundén

Accounting for SMEs

Björn Lundén integration for automated bookkeeping and payroll management in small and medium-sized businesses.

Bokio

Modern bookkeeping

Bokio API integration for startups and solo businesses that want to automate their financial management.

Microsoft Dynamics

ERP

Dynamics 365 Business Central and Finance integration for mid-size to large organisations.

SAP

Enterprise ERP

SAP Business One and S/4HANA integration via REST API and RFC connections.

How we work

Third-party SaaS integration, from API to production

REST and GraphQL APIs

We integrate any system with an open API, whether the documentation is excellent or non-existent.

Webhooks and real-time

Automate business system integration with webhooks so that systems talk to each other without delay.

Sync and data mapping

Third-party SaaS integration with correct data mapping, error handling and production-grade logging.

Security and compliance

OAuth 2.0, API key management, GDPR-compliant data handling and end-to-end encryption as standard.

Shipping and logistics

PostnordShipping and tracking
DHLExpress and logistics
BringNordic shipping
BudbeeLast-mile delivery
InstaboxParcel locker delivery
UPSInternational shipping

Communication and CRM

SendGridTransactional email
ResendDeveloper email API
TwilioSMS and calls
SlackTeam notifications
MailchimpMarketing email
HubSpotCRM and marketing
SalesforceEnterprise CRM
PipedriveSales CRM

Analytics, e-commerce and more

Google Analytics 4Web analytics
Google AdsConversion data
Meta AdsFacebook and Instagram
ShopifyE-commerce platform
WooCommerceWordPress e-commerce
ZendeskCustomer support
IntercomCustomer communication
CalendlyBooking system
ZapierWorkflow automation
Make (Integromat)Process automation
OpenAIAI and LLM
Google MapsMaps and geo

Don't see your system? We integrate any system with an open API. Get in touch and we'll check.

Tell us which systems you want connected.

We come back with a concrete proposal and a price, usually within 24 hours.

API Integration and System Integration | BankID, Fortnox, Stripe | Clickwebb