Some popular YouTube alternatives include Vimeo, known for high-quality and ad-free professional videos; Dailymotion, which offers a similar experience to YouTube with global content; Rumble, focused on creator monetization and free speech; Twitch, mainly for live streaming and gaming; DTube, a blockchain-based video site; and PeerTube, an open-source, decentralized video-sharing platform. These platforms provide different features like better revenue sharing, fewer ads, privacy-focused streaming, or niche community engagement.