I would be careful playing with anti-keyloggers. A few will leave some nasty residuals on your PC.
If you feel you need an anti-keylogger get the best - Zemana's. It is a bit pricey however and requires annual subscription renewal.
BTW - all Host Intrusion Prevention Software(HIPS) will prevent you from keyloggers. Examples are Comodo's Defense+, PC Tools Threatfire, etc. You have to use Comodo's firewall in conjunction with Defense+. I don't think Threatfire runs well with Avast as I recollect.