Top 3 enterprise-applications open source projects

企业IM即时通讯定制平台，百万级高并发、高性能、可扩展、安全、高交互体验的企业通信和协作im平台。包含通讯服务、客户端（PC、Android、iOS）、Web门户（用于集成企业应用）、WebAPI。

Drift server

✈️ An enterprise level Flight Booking System for Turkish Airlines (web-application) based on the Model View Controller (MVC) Architecture made using Java Servlets, Java Server Pages (JSPs). Moreover authentication and authorization for users is implemented. The web-application is also secured against SQL Injection and Cross-Site Scripting attacks.