Which is your favourite on line Portuguese dictionary?

I would like to ask all of Portuguese speaker and who study Portuguese. ¿Which Portuguese <–> English or Spanish dictionary (on-line) do y ou uses?
I used to use Wordreference, but I realize that it isn’t so good for look for the Portuguese words. So now I use Google Translator but I’m not happy with it.

Does anyone know good on line dictionary for Portuguese learners?

I don´t know a good on line translator for Portuguese learners. But there is some softwares, I have seen at some forums people recomending Power Translator Pro. But I don´t know if it is free or not.

I`ve just found this site:

It seems to be good.

Thank you Atos. I will use it.