SableVM

SableVM is a discontinued, open-source, customizable, and retargetable Java virtual machine (JVM). It was developed primarily at McGill University's Sable Research Group. SableVM aimed to provide a flexible platform for research and experimentation in JVM design and implementation.

Its key characteristic was its modular design, which allowed researchers and developers to easily modify and extend its functionality. This modularity facilitated experimentation with different garbage collection algorithms, memory management strategies, just-in-time (JIT) compilers, and other JVM components.

SableVM supported a subset of the Java Virtual Machine Specification. It was written in C and targeted multiple architectures. While it was not intended for general-purpose, production-level Java application execution, its primary purpose was to provide a platform for JVM research and development. It has been used in projects exploring areas like dynamic compilation, program analysis, and security.

The SableVM project is no longer actively maintained. However, its source code and related documentation are available for historical and research purposes. Its legacy lies in its contributions to JVM research and its influence on subsequent JVM implementations.