oschina.net
开源中国 www.oschina.net 是目前中国最大的开源技术社区。我们传播开源的理念,推广开源项目,为 IT 开发者提供了一个发现、使用、并交流开源技术的平台。目前开源中国社区已收录超过两万款开源软件。
HackThisSite! is a legal and safe network security resource where users test their hacking skills on various challenges and learn about hacking and network security. Also provided are articles, comprehensive and active forums, and guides and tutorials. Learn how to hack!