plaintext-offenders-webextension
a simple Browser extension to show a warning when you visit a website that stores passwords insecurely
Download for Chrome:
chrome store: https://chrome.google.com/webstore/detail/plaintext-offenders/ldkbhdleljlodldlbacdhmdiimmmldml
Download for Firefox:
Mozilla addons: https://addons.mozilla.org/en-US/firefox/addon/plaintext-offenders/
manual install / for development:
clone git repo, or download zip (from "clone or download" button) and unzip folder
open chrome://extensions
enable developer mode
load unpacked, select the unzipped folder and click OK