Gumshoe records website login credentials whenever it gets the chance, storing them securely in offline local storage to be reviewed and manipulated by the user (and only the user) at a later time. It is an open-source utility created a long time ago with no particular intentions in one direction or the other. See the source on GitHub for more information and to verify that it's not sending your login details to some remote server (can also verify based on extension's permissions... either way, you should always make sure there's nothing fishy going on before you install this sort of thing).
# GETTING STARTED
Once you have installed Gumshoe, open a tab for Facebook or something and type `gselog` in one of the login fields. Fields that prevent default behavior of text/password input elements will not always work, hence its ceased functionality on the Google search box. `gselog` is just the default passcode used on first launch to access record management; it may be changed on the record management page. If it doesn't work in the Facebook login box when you type `gselog` the first time, try opening a fresh tab or restarting Chrome.
There will be an update Soon™ so this doesn't suck as much. Stay tuned, I guess.
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!