Tesla Crypter is fully undetectable (FUD) at this moment. It also has inbuilt file binder and icon changer, which further assist to bypass some antivirus like Avira AntiVir. File assembly changer generates completely  random file assembly. The crypter also provide option to add your exe to startup, bypassing windows UAC. Option is also provided to hide the exe file after first execution.

In conclusion it's one of the best free FUD crypter available in the market. Download it all for free!

download free fud crypter