GPT-Tunnel is a Chrome browser extension developed by tomjoe, falling under the Browsers category with its focus on Add-ons & Tools. This free-to-use extension aims to streamline your interaction with ChatGPT directly from the webpage you're browsing. By simply pressing `Command + Shift + X`, users can access a command palette offering various actions like Custom Chat, Explanation of selected text, Stylization requests, and Key Points retrieval.

For users selecting specific text, GPT-Tunnel enables actions such as Custom Chat for prompt-based queries, Explanation for text comprehension, and Stylization options. On the other hand, if no text is selected, users can engage in Custom Chat, focusing on Key Points for a broader understanding. It's worth noting that the extension's chat window conveniently opens on the right-half of the screen, enhancing user experience within the Chrome browser environment.