youtube-dl is a command-line utility for downloading videos or extracting audio files from streaming websites such as YouTube, Dailymotion, and Vimeo. Developed by Ricardo Garcia Gonzales
License: Open Source
Peekvid.com was a Web site that cataloged links to various TV shows and movies to make them more easily accessible to the public. Peekvid did not host any video clip content itself; users provided the links, categorized them, and uploaded them to the site. Developed by KeepVid.com
License: Freemium
YouTube-dl is a powerful command-line tool that supports a wide range of video sites and offers extensive customization, making it ideal for advanced users. In contrast, KeepVid is a web-based solution that provides a more user-friendly experience but is limited to specific sites and features.