I am using asp.net membership and I have checked the table aspnet_membership and I can see two fields password and saltpassword which look like this QoasdDKkh5x9RizpadsGsC9N30= and
tO9xYGRkjaFGaskKnTVobiJnMDQ== respectvely.
is there any tool, Stored procedure, program, online utility tool by which I can see the actual text of that password?
The only possible way you can recover the password is via brute forcing the hash against a dictionary. This will essentially test (as many as possible) combinations of words / letters until a match is found.
Short of finding a vulnerability in the hash this is all there is. It was originally hashed exactly to prevent finding out the plaintext.