Vimeo is a five-letter alternative to YouTube, which is an online video streaming platform. Vimeo was founded in 2004 and has since become one of the most popular video streaming websites. It offers users the ability to upload, share, and view videos in high-definition quality. Vimeo also provides tools for editing and creating videos, as well as a marketplace for purchasing and selling videos. Additionally, Vimeo offers a variety of features such as live streaming, analytics, and monetization options.