Nowadays you have to keep track of dozens of log-in details: E-mail, bank accounts, software registrations, accounts for community sites and job sites and electricity companies and gaming and online services and…. And then not to forget log-ins at work and for your cell phone and for your bank card and your credit card and….
I tried to memorize it but often enough, when I did not use the passwords daily or there was a requirement to change them regularly, then I sometimes forgot them with the hassle of ordering a new password.

Other people write the passwords down. When it comes to banking details and other security sensitive accounts, you might not want to do that. And if you put it on some paper after some months the lists like to become big and indecipherable.
One solution might be the software http://www.password-depot.com. You just need to memorize 1 password to open the depot file.
The full version you can get for 29.90 EUR.
The trial version is 30 days and after 30 days it is limited to 20 passwords and 1 password file. That should be sufficient for most private users. For IT geeks or business use that might be too less.
Pleasant modern interface. The full screen can be folded up into a movable top bar which can sit on top of the browser with quick access.
When you surf to a website where log-in fields are, the Password Depot normally asks if you want to store the information. So after installation of the program, instead of entering all your details manually into the program, you can just start your usual surf routine and log on the way your log-in details.
Even when you newly register on a site, Password Depot recognizes this and offers to store the information. It has an integrated password generator, where you adjust if you want alphabetic, numeric or special characters; also you can choose to activate lower and/or upper case. However, sometimes I found the special characters so exotic that I amended the proposed password. Because some websites only accept certain characters or I would not always know, where to find them on the keyboard if I ever needed to enter them without the help of the program.
Once stored, on every return to the website you can insert with the Auto-Complete icon the log-in details. Only on a few sites I had the impression that the Auto-Complete does not work and you have to use the 2 functions Drag&Drop Username and Drag&Drop Password.

The program is also most of the time able to recognize when you enter suddenly different log-in details and asks you, if you want to change the stored details. You just have to be careful, when you have several users for 1 website.
Manual changes or cancellations to the log-in records can be made. You can also add additional information and even documents for every log-in record.
There is also a function to enter TAN lists. However, as I don’t know what that program communicates to the parent company back, I do not use the program for administrating my online banking details.
But the company Ace Bit promises that the passwords are protected with 256-bit encryption and that even spyware and keyloggers could not spy on your passwords.
I am no security expert so I cannot verify that by myself. But the software got several software awards from popular software magazines in Europe.
In a nutshell: Password Depot promises to be storage and administration panel for all your passwords, so that you only need to memorize 1 password to open password file. I think it does a pretty good job.