The article reviews the top seven real estate websites for buying, selling, or renting homes in 2021, including Zillow, Realtor.com, Trulia, Redfin, Rightmove, HomeFinder, and Homes.com. Each platform offers unique features: Zillow is known for its vast database and "Zestimate" tool, although this tool's accuracy is sometimes questioned; Realtor.com is noted for its reliability and connection to licensed agents; Trulia provides neighborhood insights and professional connections; Redfin offers regular updates and 3D tours; Rightmove is a UK-based platform with detailed market trends; HomeFinder is primarily a listing tool with social media integration; and Homes.com uses a match rating system to align user preferences with available properties. Despite their advantages, each site has specific limitations, such as restricted direct seller access or limited databases, making it crucial for users to select the platform that best suits their needs.