Just curious why you would not store those things in Keychain? I use a secure note in Keychain for software license info.
I'm not trying to be argumentative, I genuinely curious why you would pay for 1PW to do what Keychain already does free.
Because it does things that Keychain does not. Keychain is a very simple alternative for those only using Apple software, being the only one using it and not wanting to do any form of management. When you want to do more then you have to use software like 1Password.
1Password can be used alone or with multiple people (either by using their family or company offerings or just sharing a single entry in your database). You can store the database either locally, on a network drive, a webdav drive or some other cloud file sharing service (they recommend dropbox and have a tight integration with it); just basically anything since you can simply store it in a folder. You can even store things locally and still be able to sync with your iPhone via the WLAN sync service (which requires you to pair 1P on macOS with 1P on iOS as well as both apps opened and unlocked at the same time; when this is the case it'll automatically sync).
The biggest advantage is management of your data. You can add different kinds of data such as logins, creditcards, memberships and so on but you can also use tags to group data. You can also manage the passwords themselves. Obviously there is a history so you can easily go back to old passwords but there is also the option to audit the passwords. This audit can show the weak passwords, how old passwords are, duplicates and so on. This gives you a tighter control over your passwords and thus can make things more secure. You can also use it for creating time based 1-time passwords (great for 2-factor authentication).
Another part of 1Password that is very useful is its software management part. You can store all your software licenses in 1Password and add details such as download links, purchase date, price, support info and so on.
Lastly there is integration with all sorts of software from all sorts of developers on both iOS and macOS. They also have versions for Android and Windows. Especially the
integration with 3rd party apps on iOS is great, it saves a lot of copy-pasting. Quite a lot of websites also support 1Password. A good example is MacUpdate. If you buy anything from them you can download it as a 1Password entry and add it to your vault by simply double clicking the file (and if you buy a pack it'll will actually be 1 file for the entire pack; all the pieces of software will be added 1 by 1).
I quite like that the developer is also actively blogging about various security aspects. They also give quite a lot of details about their software (there is a paper about their
security design (pdf) and their
article about their proprietary file format also gives a good overview of 1Password as well as where it differs from Keychain). The only thing I dislike is the price increase. It is now twice as much as it was 2~3 years ago. They didn't add all that much, mostly the team and family subscription service (which you have to pay for separately...IIRC you do get the full 1P version for free with those subscriptions).
cks 
