Do you remember Mozilla’s ambitious plan to replace passwords? It’s called Persona, and it promised to be a single sign-in solution across the entire Internet. It’s been in the works for a while now, but Mozilla is ready to share it with the world.

Mozilla announced that Persona is now available in beta to everyone. It works in all major browsers, and is easily integrated. In fact, Mozilla hopes that Web sites across the Web begin to implement Persona as an easier way to handle log-ins.

Here’s a preview of what you can expect from Persona:

Mozilla points out that Persona is still a work in progress. With that being said, they’ve made tremendous progress on the project over the past year. From the time that the name was changed from BrowserID to Persona, they have created a new API and streamlined the first-time user experience. They also added support for showing a site’s name and logo, alongside links to the site’s privacy policy in the login dialog.

What may be most attractive to Web sites is that Persona can coexist alongside existing login methods. It’s similar to how Web sites can offer traditional email and password logins alongside Facebook and Twitter logins. Mozilla’s Persona aims to be a more secure version of those specialized logins.

To show the potential of Persona, Mozilla has partnered with The Times to illustrate how Persona can be used for cross platform logins. In essence, a user can begin The Times crossword at home on desktop and continue the same crossword on a mobile device later in the day as long as they sign in via Persona.

Interested developers can start integrating Persona into their Web sites right now. You can grab the documentation here. It’s also an open cource project so you can grab the source code at github.