DCoder has developed several editing tools for RA2/YR, including the INI Checker, AI Editors v1 & v2, Infantry Animator (recoded by Stucuk), and others. He also assisted Saberhawk in his XRML project by decrypting the CSF (partially), BAG & IDX file formats.
Visit DCoder's website. Further contact information can be found in the website.
In case anyone cares, DCoder is 22 y/old, male, from Vilnius, Lithuania (Central Europe).