There are a number of popular platforms that bloggers can use to host their blog, including WordPress, Blogger, Squarespace, and Medium. WordPress is the most popular blogging platform, as it offers a wide range of customization options, plug-ins, and themes. Blogger is another popular platform, as it is free and easy to use. Squarespace is a good option for bloggers who want a professional-looking blog, while Medium is a good option for bloggers who want to reach a wide audience.