One option is pass, which is a shell script that uses GPG to manage passwords for command line tools. You can put the password store into a git repository if you need to sync it across machines.

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chrisweekly 3 hours ago | parent [-]

Wait, what? "put the password store into a git repository"?!

	▲	dflock 2 hours ago \| parent [-]
		The store in the case of pass, is a plain text file, whose contents are encrypted strings. If you trust the encryption, you can put it anywhere you like. Keep the keys secret and safe, though!