Modern Development


Build your own login experience using the Authentication API (REST) or build your own management UI using the Management API (GraphQL) - which allows you to fully automate your setups supporting a DevOps culture.

Using API allows you to fully control and customize the user experience as well as integrate and automate the platform as needed.

Open Multi-Tenancy

Spin up tenants for your customers, development environments or business units. Our tenants are fully self-contained as tenant administrators live within the tenant itself so there's no forced dependence on a root tenant.

Using multi-tenant architectures can help you better segment customers, groups, or brands, as well as uniquely tune authentication needs.


Customize OTP delivery through any channel your users prefer using a webhook or customize the claims in your tokens using code extensions. All extensions are designed with an event-driven architecture in mind.

Using extensions helps you to fully control user experience and aid in successful integrations.

User Interfaces

Get started quickly using the Admin UI and easily test your setup with the Login UI. Manage your tenants and subscriptions with just a click of button, or keep track of your usage in near real-time.

Using the provided UIs helps you get started faster as well as provide guidance for you own implementations.

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About Quasr

Quasr is a SaaS (Software-as-a-Service) company in the cybersecurity space, in particular in Customer Identity & Access Management (CIAM).

Quasr allows developers to add authentication and privacy capabilities to their applications without having to be security experts, while offering the best user experience (UX) to their end customers.

Contact Quasr

Quasr B.V.
New Yorkkaai 93, Bus 502
2000 Antwerpen, Belgium