KeePassXC

Unless you're a Mac user, the venerable and feature-rich Keepass (the original) will run well for you (Linux and Windows), and can easily be transformed into a Lastpass-killer when you pair it up with Keefox for browser integration. As long as you securely sync your database (e.g. with Tresorit, Spideroak or Cryptomator involved), you have a huge security/privacy advantage over commercial products like Lastpass, 1Password, Roboform, Keeper and Dashlane. And that's because if you use Tresorit, Spideroak or Cryptomator, the company you host the file with won't even know they are syncing it for you, cannot lose it through a hack (or it won't matter if they do), and can't be subpoenad to give it away to law enforcement.

But two problems might come up with the otherwise excellent Keepass/Keefox setup:

1. Keepass doesn't run natively on Mac. Its database format is compatible with native Mac apps like KeepassX, KeeWeb and MacPass. But these don't have browser integration. Not very convenient.

2. If you use Firefox as your browser - and it's still the best/most privacy-oriented browser out there (if you configure it right) - your Keefox extension might soon stop working because the way Mozilla plan on implementing browser extensions.

KeepassXC (this thing) solves this problem. Firstly, it runs the same on Windows, Mac and Linux. Secondly, it is compatible 100% with databases used by Keepass, KeepassX, MacPass and Keeweb. And, crucially, it has browser integration through two browser addons: Passifox (for Firefox) and ChromeIPass for Chrome/Chromium (but it works with much more private browsers, like Vivaldi, Iridium and Ungoogled Chromium.

KeepassXC is, at the time of writing (5th March 2017), the best cross-platform password manager I know. It's free, stores your data locally (or leaves the choice up to you how to sync it) and has browser integration. Also, because it's open source, it is to be trusted much more than other recent efforts like Enpass, whose creators stubbornly refuse to admit that they could open source their project and still have an income from their product. (Also, Enpass doesn't support the use of keyfiles and their database isn't compatible with other programs.)

Edited: 2017-06-11

[Edited by JohnFastman, June 11]

A nice cross platform on keepass. use to use with multiple devices and a great integration with browsers while using the "KeepassXC" extension.

Decent password manager. No issues to report.

The de facto standard in cross-platform password management on the Desktop. Offers many features withouth compromising in ease-of-use.

KeePass in general lets you maintain control of your password database by keeping it locally. It's easy to sync with whatever local or cloud service you want, and they only have access to the encrypted file.

KeepassXC specifically responds more quickly than the original KeePass in my experience, is actively maintained, just looks better, auto-saves your changes, offers to re-load when your sync setup bring in changes from another device, and it needs fewer hoops to jump through to install on Mac and Linux.

Combining this with the KeePassXC-Browser add-on and mobile KeePass2Android app, plus a sync setup, is an almost seamless experience across Windows, Mac, Linux and Android.

Has been working great for me for years on multiple devices with different operating systems. Works flawlessly paired with Syncthing, KeePassXC for Android and with Firefox and the KeePassXC Browser Plugin

open source, secure and available on all common platforms