Write Once, Crawl Anywhere


  • Quartz - an enterprise-grade job scheduler
  • Rapidoid - An intriguing web framework.
  • MapDB - An interesting serialization library
  • Akka - the Actor pattern for both Scala and Java
  • Spark - a nice, lean HTTP/route engine
  • JD-GUI Java Decompiler, an awesome tool if you’re trying to debug stuff you’d ordinarily not have the source to.
  • JamVM, a compact Java VM that happens to work fine on ARM architectures.
  • Vaadin, a RIA framework.