Propensive is a European technology company, specializing in supporting the Scala programming community through open-source software, community events and training services.

We develop, support and maintain a selection of small—but powerful—Scala libraries and tools, and organize the Scala World conference in the Lake District—perhaps the most exciting event on the Scala calendar.


An revolutionary new build tool and dependency manager for Scala.

Scala World

Five days of outdoor activities, conference talks and workshops, in the Lake District, England.

Functional Africa

Our project to support functional developers in Africa.

Scala One Training

Advanced Type Mechanics, a course for advanced developers to fully understand Scala's type system.


An online course for programming in Scala 3, free for everyone, always.

Open Source Projects

Propensive develop a number of small libraries that provide a variety of useful functionality for Scala developers. Each library is focused and single-purpose designed to take full advantage of the new features of Scala 3 and lightweight concurrency of Loom, where applicable. Each is fully-documented licensed under the Apache 2.0 open-source license, and welcomes contributors.