The tool is called "Whisper Service" and it is a GUI API for OpenAI's Whisper. It allows users to transcribe audio and video files by uploading them to the platform, and then receive the transcripts via email or download links. It also provides an editor for easy correction of transcript errors, and users can save the corrected files to their desktop. The tool comes with customizable options such as language, model, filename, and output format. It also offers webhook response feature to send notifications to chosen URLs. The code is deployed on Github under the Apache-2.0 license.