Nintendo 64

1964
An advanced open source emulator for Windows.
http://1964emu.emulation64.com/

Apollo
A freeware emulator for Windows.
http://www.apollo64.com/

Asm64
Developer tool - multipass assembler for MIPS r4300i.
http://members.ping.at/stage/asm64.html

The Company 2064
'SupraHLE' project, compatibility lists and INI files.
http://thecpy.emulation64.com/Gateway/

Daedalus
An open source emulator for Windows.
http://daedalus.boob.co.uk/

EmuHelp
News, reviews and FAQs, chat and forums, mainly N64.
http://www.emuhelp.com/

Emulation64
Next generation console emulation news.
http://www.emulation64.com/

Mupen64
An open source emulator for BeOS, Linux, MacOS X, QNX, and Windows.
http://mupen64.emulation64.com/

N64 emulation Support Centre
Information and downloads for N64 emulation and emulators.
http://www.smiff.clara.net/

Project64k
A freeware emulator for Windows with Kaillera support based on Project64.
http://pj64k.emulation64.com/

SixtyForce
A freeware emulator for MacOS.
http://www.sixtyforce.com/

TR Central - Unofficial Site
Downloads and compatibility lists for the True Reality emulators.
http://www.trwin.8m.com

UltraHLE - Tribute Site
Media coverage and site archives.
http://www.emuunlim.com/UltraHLE/

UltraHLE Alpha
An open source emulator for Windows based on UltraHLE.
http://alpha.emulation64.com/

UltraHLP - Official Site
Downloads, manual, FAQ, debug and compatibility information.
http://www.emuunlim.com/UltraHLP/