The following webservers are relevant for Linux/MIPS developers.
This server covers most of Linux/MIPS. If you need something chances are it's already there.
This sites has MIPS own version of Linux/MIPS based distributions and tools for their processors and evaluation boards.
This is Debian's MIPS/Linux site.
This is Sony's Linux/MIPS server for the Playstation 2. Also in Japanese.
Bradley D. LaRonde's HowTo on building a cross toolchain for MIPS/Linux.
Jun Sun's porting guide has some useful information and tips for porting to new platforms.
The primary anonymous FTP servers for Linux/MIPS are
This server should satisfy almost all of your Linux/MIPS related ftp desires. Really.
This is the server of MIPS, Inc. itself. Among other things it offers a recent Redhat-based distribution and a support area for MIPS' evaluation boards.
Maciej W. Rozycki's FTP server.
The Linux VR project has worked on support for a variety of NEC VR41xx, Toshiba TMPR39xx and Philips PR3170-based systems. Most of this code has been merged into the Linux/MIPS CVS tree. The projects web pages which used to be at www.linux-vr.org are now archived at http://www.linux-mips.org/linux-vr/.
The Linux-VR CVS archive is at http://www.linux-mips.org/cvsweb/linux-vr; it can also be checked out by CVS.