mconsole is a multi-user solution to allow access to serial console. Serial consoles are a very efficient and inexpensive way to access and configure routers, switch and server (unix/linux). They replace the expensive and not so practical KVM solutions. Most servers today may be configured using a serial link (you enable this in the BIOS). Even the BIOS itself is configurable with the serial link.
mconsole maintains a list of serial connections. It supports TCP based serial controllers as well. Opened connections are monitored and the output is logged. Several users/admins may access the same console at once (all see the same copy).
The source (under GPL) is available using subversion here. p>
Package for centos 6.5 64 bits may be found here (compiled by me). You need linuxconf-lib and mconsole.