During 2021, GitHub repositories related to this topic generally fell into three categories: Command-Line Wrappers: Projects like FX31337/ex4_to_mq4_cli
MetaQuotes and many developers consider decompilation a violation of copyright laws, and the process is often deemed illegal for commercial use in many jurisdictions.
: Repositories like FX31337/ex4_to_mq4_cli were common in 2021 but are not actual decompilers . They act as command-line interfaces for an old, proprietary tool from purebeam.biz that was designed for MT4 versions pre-dating the 2014 "Build 600" update.
Most tools labeled as "EX4 to MQ4 Decompiler 2021" on GitHub are often outdated, non-functional, or carry security risks. 🛡️ Critical Security Warning
The following GitHub repositories were identified as relevant to EX4 to MQ4 decompilation in 2021: