Bananarr

Bananarr is a Chrome extension designed to profile the technology stack of any website directly within the browser. The tool operates as an offline-first technology profiler, emphasizing speed and privacy by conducting all scans and matching logic locally on the user's device. Bananarr does not require users to create accounts and does not utilize any app servers or remote backend APIs, ensuring that browsing data is not sent externally.

The extension provides instant scans of websites, displaying detailed information about detected programming languages, backend frameworks, frontend and JavaScript libraries, as well as UI and CSS frameworks. For example, it can identify technologies such as Ruby, Ruby on Rails, Hotwire Turbo, Stimulus JS, and Tailwind CSS when present on a site. Bananarr's detection process uses active-tab header and DNS checks only for HTTP and hosting or IP evidence, with all signature databases and matching logic packaged within the extension itself.

Bananarr is aimed at users who need to inspect and understand the technology stacks behind websites, such as developers or tech enthusiasts seeking fast and private insights. The extension is added directly to Chrome and can be activated with a default keyboard shortcut (Option + B on Mac or Alt + B on Windows). Its design philosophy prioritizes user privacy and performance, explicitly avoiding tracking or data collection practices common in other technology profilers.

The tool is currently in beta and does not mention any pricing or licensing details in the available information.