About userstack

Originally created in 2014 under a different name, userstack has grown to become the single biggest User-Agent API Lookup services out there.

How it all started

In early 2014, the first-ever version of userstack, then called UserAgent API saw the light of day, placed in a market that had not seen many User-Agent detection cloud APIs before. It soon became clear that developers and companies from all around the world would become potential clients, which led to further development and improvement of the product, and ultimately to its relaunch as userstack.

Today, userstack is counting thousands of active users, from freelance developers and SMBs all the way to large corporations, including Accenture, Apple and Intuit.

Powered by apilayer

userstack is a service built and maintained by apilayer, the company behind some of the most popular developer tools, SaaS products and APIs currently on the market — including currencylayer, eversign, invoicely and many more.

Vienna Office (HQ)

apilayer GmbH
Hörlgasse 12/4
1090 Vienna
Austria

London Office

apilayer UK Limited
6-8 Stuart Street
Luton Beds LU1 2SJ
United Kingdom

Explore Products by apilayer