OpenHFT/Java-Runtime-Compiler

Runtime code generation for the Java virtual machine.

Java unlimited redefinition of classes at runtime.

Java bytecode engineering toolkit

MVEL (MVFLEX Expression Language)

Jeandle is a Just-in-Time compiler for Java. It is built on OpenJDK and leverages the LLVM compiler infrastructure to generate machine code, aiming to provide powerful compilation optimizations and deliver high-performance code.

jOOR - Fluent Reflection in Java jOOR is a very simple fluent API that gives access to your Java Class structures in a more intuitive way. The JDK's reflection APIs are hard and verbose to use. Other languages have much simpler constructs to access type meta information at runtime. Let us make Java reflection better.

Testing tools for javac and annotation processors

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.