Next.js is a highly popular web framework among React developers, with a growing community and a large number of users. According to the State of JavaScript survey 2021, Next.js was voted the most popular front-end framework, with 44.9% of respondents saying they have used it or would like to learn it.

In addition, Next.js has over 47,000 stars on GitHub and is used by many large companies and popular websites, including Netflix, Uber, Twitch, and Hulu. Its popularity can be attributed to its powerful features for server-side rendering, static site generation, and incremental site regeneration, which make it easy to build fast, scalable, and SEO-friendly web applications.

Overall, Next.js has become a popular choice for React developers who want to build high-performance web applications with ease.