TFTP Server is a multi-threaded TFTP server, allowing any number of clients to connect simultaneously. It supports tsize, blksize, and interval options, PXE boot, and can be run standalone or as a daemon. Port ranges can be specified to work across firewalls. There is also a single port version, for situations where additional ports cannot be opened.
Autopoweroff is a script that shuts down a computer at a specific time, but only if some conditions are met. It works well on home routers/firewalls where the machine can be switched off every night and powered back up in the morning. It can be configured to only shut down the server after any computers which depend on the server for Internet access have been shut down.
SoL (Server optimized Linux) is a Linux distribution completely independent from other Linux distributions. It was built from the original source packages and is optimized for heavy-duty server work. It contains all common server applications, and features XML boot and script technology that makes it easy to configure and make the server work.
minit is an attempt to cross-breed DJ Bernstein's daemontools and init, while adding dependencies, and maintaining minimal code base. It is possible to start and stop services on the fly. minit does not depend on a mounted /proc file system, and it does not write to any part of the file system, not even to start and stop services. It does not use System V IPC, either.
Firewall is a set of scripts (firewall, fwup, and fwdown) that implement an ipchains firewall and various forms of network address and port translation. All you have to do is read the policy file and edit it to reflect your topology and filtering policy. It supports many different types of network topology (single host, traditional forwarding, masquerading, port forwarding, alias port forwarding and NAT), up to 10 untrusted interfaces each with their own policy, and over 50 network applications. It also supports centralised administration of multiple remote firewalls (meta-firewall).