Cyrix
Cx486 Family

Evergreen
Make It 486 ?

IBM Upgrades 
70/80 DLC2 Upgrade
70/80 486DX33 (OEM Hyperace 486) 
855x SLC2 Upgrade
855x SLC3 Upgrade
8556/57 Cached CPU
 P/370
   P/370 environment
   MUSIC/SP on P/370
   MUSIC/SP OS
 P/390
   PC Server to S/390 Connectivity
Wizard

Kingston 
486/Now 
386SX Now

MERLIN- Multiprocessor Design for Micro Channel Architecture by Neal M. Lackritz

Kingston MCMaster / AOX MicroMaster
MCMaster (386 and 486 models)

Perkin-Elmer
SYS 2000 PS2 SingleT4 4MEG
   Transputer Page

RT Accelerator

Xtend
Renaissance

ASMP vs. SMP
HALT! on Linux 
Motorola (RTC Chip)

i960CA vs. i960CF