I thought I would share this excellent resource. I do not vouch for the results of any systems or indicators on this site but think it might be useful for any MT4 coders out there, or people interested in learning.
It has a great array of opensource code which can prove a useful tool when developing your own systems. Who knows - perhaps there is a gem of an open source system in there somewhere! I learnt to code MT4 via examples from open source code so wanted to pass on this great library.