Osprey is a free, open-source browser security extension that protects you from phishing, malware, scams, and other malicious websites. As you browse, Osprey checks every site you visit against more than 20 threat-intelligence providers, then blocks or warns you the moment one of them flags a site as dangerous.
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Osprey's goal is to be the most trusted, transparent, and effective browser protection extension for home users and businesses, while being free, forever. Unlike other free extensions, Osprey will never collect, profile, or sell your browsing data.
You can check Osprey's real-time protection status by left-clicking the 
The settings page allows you to configure which protection providers Osprey uses to check websites:
You can even add your own API keys for third-party integrations that support it:
When Osprey blocks a website, you'll see a warning page like this:
Questions or concerns? Want to become a provider? Contact support@osprey.ac.
For support or queries, please open an issue in the Issues section.