Gotanda is a free OSINT (Open Source Intelligence) extension for the Chrome browser. Developed by HASH1da1, this web extension allows users to search for OSINT information from various indicators of compromise (IOC) found on web pages, such as IP addresses, domains, URLs, and social media handles.

With Gotanda, users can simply right-click on highlighted IOC strings to access a context menu. From there, they can choose from a list of search engines to perform their search. The extension also offers the ability to search the timelines of Twitter and Facebook using any keywords.

It's worth noting that Gotanda is optimized for the Japanese environment. This extension serves as a platform for studying and practicing JavaScript, and the source code is available on the developer's GitHub page.

For those interested in exploring OSINT information, Gotanda is a useful and accessible tool for Chrome users.