NodeSource is a technology company that specializes in providing enterprise-grade solutions for Node.js, a widely-used JavaScript runtime. Their offerings include products and services that enhance the performance, reliability, and security of Node.js applications. NodeSource provides tools that facilitate monitoring, security vulnerability auditing, and performance analysis, which are crucial for businesses that rely on Node.js for their backend infrastructure. Additionally, they offer support services to help organizations effectively manage and scale their Node.js applications.