pppctl is a suite of programs suitable for use by those with ppp connections. It includes programs to facilitate charging for use of the connection, controlling the connection from a web page and selecting from a range of ISPs to use to dialup. It's also ideal for doing automated mail/news polls.
PngEncoder is a Java class which takes a Java Image object (based on DirectColorModel) and returns a byte-array in PNG format. This byte-array is suitable for saving as a PNG file or delivery to a client from a servlet. The class optionally encodes alpha information from the Image. PngEncoderB takes a Java BufferedImage object (which may have either a DirectColorModel or IndexColorModel) and returns a byte array in PNG format..
Pnuts is a scripting language totally written in Java. Users can use Pnuts to access the Java environment interactively. This helps developers to test their programs efficiently and easily. An interesting usage for this language is to be used as "glue" for JavaBeans or beween any Java API. Also, it can be embedded in a Java program to make processing more flexible.
Pocket Linux is an almost minimal, one floppy linux system designed to quickly convert PC workstation into secure linux-based workstation using ssh to connect to remote host (other networking clients are also supported). It supports bootp for determining host IP and other network parameters (there's also manual configuration possible, but bootp is recommended). In addition to workstations equipped with a network card (ethernet or arcnet), you can also use Pocket Linux on a PC equipped with a modem. Modem is automatically detected and then PPP connection is made.
Podfuk wants to replace userfs; the reasons for its existence are about the same as for userfs (filesystems in userland are easier to debug, and you can have completely new filesystems (tar) that would bloat the kernel too much). Podfuk has advantages over userfs: it does not require kernel patch (coda is present in 2.2.X kernels) and it avoids C++. Currently, all VFSs from midnight are supported; that includes tar, gzip, ftp, bzip2, fish, and more.