evilvte is a terminal emulator. It supports almost everything VTE provides. It also supports tabs, automatic hiding of the tab bar, and the ability to switch encoding at runtime. Configuration is done by editing the source code and recompiling it. The size of a standard stripped binary of evilvte is less than 9 kilobytes.
ConMan is a serial console management program designed to support a large number of console devices and simultaneous users. It supports local serial devices, remote terminal servers (via the telnet protocol), IPMI Serial-Over-LAN (via FreeIPMI), Unix domain sockets, and external processes (e.g., using Expect to control connections over telnet, ssh, or IPMI Serial-Over-LAN). Its features include logging (and optionally timestamping) console device output to file, connecting to consoles in monitor (R/O) or interactive (R/W) mode, allowing clients to share or steal console write privileges, and broadcasting client output to multiple consoles.
The mgetty package contains an intelligent getty for allowing logins over a serial line (such as through a modem) and receiving incoming faxes. The companion program sendfax is used for sending faxes from the commandline or from other applications. The third main component is vgetty/vm which can be used with a voice-capable modem to implement an answering machine, a voice menu system, and similar things.
Thinstation is a mini Linux distribution that enables you to convert standard PCs into full-featured, diskless thin clients supporting all major connectivity protocols like Windows terminal services (RDP), Citrix Ica, X, NX, telnet, ssh, etc. It can be booted from the network using Etherboot/PXE or from standard media like floppy/CD/hd/flash-disk etc. The configuration is centralized to simplify terminal management.
Mail2sh makes it possible to carry out shell commands by email. Email is sent to a particular user on your host and the commands will be carried out if the user and password given matches ones in /etc/passwd. Commands are executed with the user's privileges, and combined with a PGP module ensures a certain level of security for use. Note that the system is not natively encrypted, so use of an encryption mechanism is highly recommended for security reasons.