The Best Cross Platform Online Judge，Online Judge Kernel，Virtual Judge Adapter，Contest Collect, Command-Line Interface，Telnet Server/Clinet，FTP Server/Client

libcli is a command-line interface, a console that helps users issue commands to a program. 可作为嵌入式设备的命令行配置管理接口，支持命令行联想、自动补全、命令行帮助、整形参数、字符型参数、IP/MAC地址参数等功能， 支持telnet方式的多用户vty cli技术，支持视图/buildrun/命令行级别

Generate callback stack of a c/cpp project.

Packethub: Online hex-dump network packet decoder. Analyzes protocol structure and fields of network packets in hexadecimal format.

Global contest events hub.

Lightweight telnet-based embedded device test framework