Library Sniffer is a web technology detection tool developed by justjavac. It is available as a free add-on for the Chrome browser. This tool allows users to sniff out and identify the JavaScript libraries and frameworks being used on any web page they are currently viewing.

With Library Sniffer, users can easily detect not only the web pages and frameworks being used, but also third-party services and server technologies. This can be particularly useful for developers and web designers who want to gain insights into the technologies being used by other websites.

The tool provides accurate and relevant information, helping users to stay up-to-date with the latest trends and technologies in the web development world. Whether you are curious about the technologies behind a particular website or looking for inspiration for your own projects, Library Sniffer is a valuable tool to have in your arsenal.