The historical uIP sources
An implementation of a small TCP/IP protocol stack for learning.
The historical Contiki 1.x sources
Unified Communication X (mailing list - https://elist.ornl.gov/mailman/listinfo/ucx-group)
UIPEthernet: A plugin-replacement of the stock Arduino Ethernet library for ENC28J60 shields and ...
3G modem dialing daemon
A hacker's userspace TCP/IP stack
KCP - A Fast and Reliable ARQ Protocol
Watt-32 TCP library.
Deprecated, use: https://github.com/sctp/lksctp-tools
Simple UDP tun/tap-based tunnel with mcrypt encryption. Also some more AF_PACKET and tun/tap rela...
Various command-line tools, mostly for Linux
支持天翼拨号的pppd - 旧版