TNT4J是一个改进Log4J新的开源Java应用日志框架。用于应用程序活动的跟踪、相关性检查、诊断，可以跨多个应用程序，运行时，服务器，地理的位置。这个API是专门用以解决分布式，并发，多线程，多用户应用，包括活动的相关性，应用程序的状态转储，性能和用户定义的量度。 

以下是它的特性：

• Simple programming model to facilitate fast root-cause, log analysis
• Automated timing of application activities and sub-activities (elapsed, idle time, message age)
• Application state dump framework for reporting internal variables, data structures
• Granular conditional logging based on application tokens, patterns, that can be shared accross applications, runtimes
• Share logging context across application, thread, runtime boundaries
• Inter-log correlation of log entries (correlators and tags) between multiple related applications
• Intra-log correlation of related activities and sub-activities between multiple applications and threads
• Event location tags such as GPS, server etc.
• Message flow direction for composite applications that exchange messages (e.g. SOAP, JMS, and SQL etc.)
• User defined properties such as CPU, memory logging, thread statistics per process/thread
• Extensible activity, sink, error listeners for pre, post event processing
• Granular context such as thread id, process id, server, application name

项目主页：http://www.open-open.com/lib/view/home/1400244918379