About EX4 format
To learn more about the EX4 format, use the following resources:
How to open EX4 file in MetaEditor
What is EX4 Opener?
What does a trader need the source code for?
EX4 to MQ4 decompiler v4.0.427.4
Download EX4 decompiler
Decompilation of EX4 to MQ4: Unpacking the Mystery of FOREX Trading
Open Source Software: Benefits for Traders
EX4 to MQ4 converter