Preact.js - Preact is a fast 3kB alternative to React with the same modern API. Components & Virtual DOM.
Workday - Workday is an on‑demand financial management and human capital management software solution.
Inferno - An extremely fast React-like javascript library for building modern user interfaces.
ADP Workforce Now - ADP Workforce Now provides cloud-based software, expert support and predictive analytics for data-driven insights.
Glimmer - Fast and light-weight UI components for the web
Paylocity - Paylocity has revolutionized the industry and has quickly become the leading independent provider of online payroll services and HR solutions.