A powerful browser extension to create, edit and delete cookies
Firefox Profiler — Web app for Firefox performance analysis
Netscape's Just-In-Time Java compiler
Javascript Expression Language: Powerful context-based expression parser and evaluator
JEXL in Rust
LALR parser for GLSL
A WebCompat management tools collection
Bytecode Interpreter with Perf JIT Profiling
Analysis of Firefox cycle collector and garbage collector heap graphs
