There aren't any other real bots than RiftMinion
[Only registered and activated users can see links. Click Here To Register...] available. Just two more from mimin and maybe even viper, but both suck hard, they are cheap unsafe keypressers.
Try RiftMinion @MMOminion.com, we have good support, and if you ask in the chat for a trial key, you will get one to test it. It is safe and very good in PvE and PvP (The PvP healer bot plays better than 95% of the real healers :D )
Edit: We are doing some free trial weekends over the next months, just hop over and grab a key!
cheers!