Have you used Mitro, Twitter's password manager that the company acquired last year? If you didn't, that's okay, as not many people did. However it was very popular within Silicon Valley startups as a way for companies to manage internal passwords and credentials. It was also free, which was a nice selling point. However, Mitro announced it will be closing on August 31st.
A page dedicated to the shutdown explained why.
Unfortunately, we can no longer maintain Mitro. On August 31st, 2015 it will be shut down. Please follow the directions below to export your data and remove the extension. We will delete all data on September 13th, 2015. Thank you for your support, and sorry for the inconvenience. If you wish to transfer to an alternative password manager, we recommend 1Password, Dashlane, or LastPass.
July 18th: Creating new accounts will be disabled.
August 4th: Final email warning will be sent.
August 16th: Mitro will be come read-only.
August 31st: Mitro will be turned off.
September 13th: All Mitro user data will be permanently destroyed.
The site also says that if you want to pay $200 per month because of the "extreme hardship" this may cause, you can email one of the product managers, which seems insane for a password manager. This was one installed via a Chrome Extension, which opens it up for even more trouble than it would be worth to save your passwords.
So there you have it. Twitter is shutting down Mitro and is, for now, getting away from the password management space. With all of the other options out there, I doubt this will create too much of a rift, especially since the company has made it extremely easy to export your data to an Excel spreadsheet or .csv file.