You could try keepassx (sudo apt-get install keepassx).
You can add a configuration in the comments section and set it to auto-type for you. For websites with a login auto type of login can also be configured. In your case, since you only need to input the password you would type:
Auto-Type: {PASSWORD}
When asked for your password you place keepassx on the forefront, and click
on "perform auto type" from the context menu when right clicking on the
correct entry.
Hope this helps.
