ej-technologies GmbH

ej-technologies GmbH is a Germany-based software company specializing in developer tools for the Java ecosystem. They are best known for JProfiler, a commercial Java profiler used to analyze performance, memory use, and threading behavior in Java applications. In addition to JProfiler, their product portfolio includes install4j (a multi-platform Java installer builder), exe4j (a Windows launcher creation tool and wizard), and jclasslib (a Java class file bytecode viewer). Their tools target both enterprise and independent developers who need robust, production-oriented tooling for building, deploying, and profiling Java applications.

The company focuses on creating high-quality, professionally supported commercial tools, often offering trial versions and paid licenses aimed at teams and organizations. ej-technologies has established a reputation in the Java community for practical, well-documented utilities that integrate into development workflows and CI pipelines, and for maintainin...