Humanloop is a GPT-4 application platform founded in 2020 by computer scientists from UCL and Cambridge. It aims to solve time-consuming tasks by integrating an SDK to log all requests to GPT-3 and user feedback.

Just Prompts is an online tool for optimizing prompts. It provides a free Additive Prompting feature to help users improve their input content in a shorter amount of time. It also organizes various prompt examples for convenient reference and quick use.