If so, which one do you use?
Did you research one to use or did you just start using the first one you found?
I’m listing the ones I can think of in the poll but it’s certainly not an exhaustive list.
I use eWallet. I looked around a bit, but I didn’t do exhaustive research. Mostly I wanted something that would go on my iPhone.
The concept doesn’t make sense to me. A password manager? Never heard of it, I just remember them. I think I have 12 right now, not too hard.
I use KeePass (+dropbox to keep my database), as was recommended on these forums in a previous thread. And I’ve gone and made most of my passwords random text strings except for a select few.
I have hundreds of passwords, the worst of which are required to be 15 characters long, with numbers, letters, and special characters, and they change every 90 days (and cannot be repeated). There is no way I can keep track without some sort of system.
I am not sure if what I use counts as a password manager. I use a simple text file, but keep it encoded and password protected with Migo Portable Vault. When the text file is retrieved from the vault (it comes up in Notepad) it is quite easy to find the password I want via Search.
I work in medical research. I do not get to pick my login names for the numerous sites I have to visit, I have dozens of URLs that I have to keep track of for secure data transmission, and passwords have to be complex and changed frequently. Plus most of them will lock me out of the system if I enter the wrong password 3 times, and if I’m dealing with a patient, I do not have time to call some help desk (whose number I’ll have to look up) and get my account reset.
Plus I have multiple e-mail addresses that I associate my personal-use passwords with; I do not allow only one or only a couple addresses to be the key for obtaining all of my logins, lest the e-mail account itself is compromised.
I just checked my 1Password app on my iPhone, and it has 97 entries in it. I would estimate half are for work.
I use a little black notebook with a-z on the side. Half the time, I can’t even remember which email I use to log into some sites, let alone the password, whether it’s capitalised or has a number on the end.
I’ve been thinking about getting one, but for now I just use the one built in to Firefox.
No, I can’t stand them, doing things for me.
hundreds??? Wowser! I also cannot conceive of why anyone needs hundreds.
I use RoboForm. Just doing my Christmas shopping involved visiting a few dozen sites, all of which had its own unique username and password. I also like that I can print the password list.
Accounts for different things. Each credit card has an account the bank has an account. All of the various things on the web like straight dope, amazon, itunes, facebook, twitter, gmail, etc. it adds up pretty quick. I mainly like it for seldom used things like some online merchant that I buy from once or twice a year.
I don’t use one but I’ve definitely been considering it.
What would really help me is if they would tell me the password limitations on the login page. Then I would have at least a shot at remembering what I had done to create the account.
Something like “This password requires one letter, one number or special character and is limited to 4 charachters”
It’s not like it would help the hackers - if they want to find out the conditions all they need to do is create an account, but as a memory jogger it would be very useful for actual users.
I use a Rolodex.
I am my own password manager.
In reality, I’ve got about 600 IDs and passwords, but I’m able to run mass password changing scripts for most of them, so all of my Oracle database IDs, for example, can all have the same password.
I use SafeWallet. Great tool for managing passwords. I use it across my Windows (using with the Chrome extension), Macbook Air, iPhone and iPad - syncing across cloud.
I manage approx 250 logins up to date, and counting! 
I also use KeePass with Dropbox to keep my database synced between computers.
I use RoboForm for years now never let me down
I’m paranoid that a password manager would be just a clever way for some unscrupulous coders to steal my passwords. So I just let Firefox manage it, no big deal.
My banking and my work logins are really unique and tucked away in my head. Anything else I just repeat logins because I don’t really care if they get hacked. It’s not like I’m using 1234 as a password but if someone hacked into my SDMB account or whatever…I would live.