CSS Selector Finder for Chrome Devtools is a free add-on and tool developed by ABBAdata. This program is designed to generate CSS selectors from the Chrome Devtools Elements Panel, making it easy for developers to find unique CSS selectors.

The main feature of CSS Selector Finder is its ability to continuously generate unique CSS selectors as the selection is changed in the Devtools Elements panel. This allows developers to quickly and accurately select elements on a webpage using CSS selectors.

One of the strengths of this program is its high configurability. Users can easily change settings interactively and see the results immediately. The program allows users to enable or disable the usage of IDs, class names, and tag names for selector generation. Users can also filter out specific values of IDs, class names, and tag names, and use custom attribute names and attribute name/value pairs. Additionally, there are various settings available to control the robustness and optimization of selectors.

Overall, CSS Selector Finder for Chrome Devtools is a valuable tool for developers who work with CSS selectors. Its ease of use, continuous generation of unique selectors, and high configurability make it a useful addition to any developer's toolkit.