10 best JavaScript Streaming Analytics libraries in 2025

JavaScript has been the most popular programming language for the web development in the past years. There are more than 500 JavaScript frameworks and libraries. JavaScript language is well suited for handling data analytics since it's easy to pick up and use, and has a wide range of libraries. Streaming analytics improves processes by allowing developers to process and analyze data as it arrives in real-time and build responsive applications. These applications can be used by companies to perform a variety of tasks such as detecting fraud, analyzing customer behavior, or predicting customer retention. Streaming analytics library can help in the process, while also adding context and meaning to the data. Some of the most widely used open source libraries for JavaScript Streaming Analytics among developers include: ProjectRTC - WebRTC Live Streaming on nodeJS; mpegts - Javascript HTTP Live Streaming realtime converter and player; node-stream - RTMP server in Nodejs for live streaming.