tcp(4P) - man - phpMan

rpc_soc (3t)         - "library routines for remote procedure calls"
faked-tcp (1)        - daemon that remembers fake ownership/permissions of fi...
fakeroot-tcp (1)     - run a command in an environment faking root privileges...
ip-mptcp (8)         - MPTCP path manager configuration
ip-tcp_metrics (8)   - management for TCP Metrics
nc (1)               - arbitrary TCP and UDP connections and listens
nc.openbsd (1)       - arbitrary TCP and UDP connections and listens
nc_openbsd (1)       - arbitrary TCP and UDP connections and listens
Net::Server::Proto::TCP (3pm) - Net::Server TCP protocol.
Net::SMPP (3pm)      - pure Perl implementation of SMPP 3.4 over TCP
Net::Telnet (3pm)    - interact with TELNET port or other TCP ports
netcat (1)           - arbitrary TCP and UDP connections and listens
POE::Component::Client::TCP (3pm) - a simplified TCP client
POE::Component::Server::TCP (3pm) - a simplified TCP server
SOAP::Transport::TCP (3pm) - TCP Transport Support for SOAP::Lite
tcp (7)              - TCP protocol
tcp_table (5)        - Postfix client/server table lookup protocol
tcpdump (8)          - dump traffic on a network
tcpspray6 (1)        - TCP/IP bandwidth measurement tool (Discard and Echo cl...
tcpspray.ndisc6 (1)  - TCP/IP bandwidth measurement tool (Discard and Echo cl...
tcptraceroute (8)    - print the route packets trace to network host
tcptraceroute.db (8) - print the route packets trace to network host
tcptraceroute6 (8)   - IPv6 traceroute tool
xfs_rtcp (8)         - XFS realtime copy command
zshtcpsys (1)        - zsh tcp system