List of x86 manufacturers

Manufacturers
x86-compatible processors have been designed, manufactured and sold by a number of companies, including:

x86-processors for regular PCs

 * Intel
 * AMD
 * Zhaoxin

In the past:
 * Transmeta (discontinued its x86 line)
 * Rise Technology (acquired by SiS, that sold its x86 (embedded) line to DM&P)
 * IDT (Centaur Technology x86 division acquired by VIA)
 * Cyrix (acquired by National Semiconductor)
 * National Semiconductor (sold the x86 PC designs to VIA and later the x86 embedded designs to AMD)
 * NexGen (acquired by AMD)
 * Chips and Technologies (acquired by Intel)
 * Texas Instruments (discontinued its own x86 line)
 * IBM (discontinued its own x86 line)
 * UMC (discontinued its x86 line)
 * NEC (discontinued its x86 line)
 * VM Technology  (discontinued its x86 line)
 * VIA

x86-processors for embedded designs only
In the past:
 * DM&P Electronics (continues SiS' Vortex86 line)
 * ZF Micro ZFx86, Cx486DX SoC
 * RDC Semiconductors 486SX compatible RISC core (R8610 and R8620)
 * DP Kwazar SP (ДП КВАЗАР-ІС) - As of December 2021, КР1810ВМ86 (Soviet 8086 clone) still appears on Kwazar's price list.
 * ALi (x86 products went to Nvidia through the ULi sale)
 * Nvidia (M6117C - 386SX embedded microcontroller)
 * Auctor / ACC Micro - Maple SoC (Cx486DX4 core at 100 to 133 MHz)
 * Advantech - EVA-X4150 and EVA-X4300 (SoCs with 486SX-compatible processors at 150 MHz and 300 MHz, respectively)
 * Innovasic - pin-compatible 80186/80188 clones
 * Vadem - VG230 and VG330 (SoCs with NEC V30 CPU cores, manufacturing continued by Amphus)
 * SiS (sold its Vortex86 line to DM&P)
 * Intersil (x86 line, that is up to 80286 compatible, discontinued)
 * VAutomation - offered synthesizable x86 cores, in particular the Turbo 186, that has been implemented in ASICs from numerous vendors, e.g.
 * Zoran Corporation: Vaddis 6
 * Genesis Microchip Inc: GM1601
 * Lantronix: DSTni-EX, DSTni-LX
 * Synergetic: EC-1

Open source x86 cores

 * ao486 open source FPGA implementation of the 486SX (currently targets the Terasic Altera DE2-115)
 * S80186 open source 80186 compatible FPGA implementation
 * Zet open source 80186 compatible FPGA implementation targeting the Xilinx ML403 and Altera DE1

x86-SoCs for mobile devices

 * Rockchip (Intel SoFIA)
 * Spreadtrum (Intel SoFIA)

Manufacturing-only of x86-processors designed by others

 * GlobalFoundries (manufactures processors for AMD)
 * IBM (manufactures processors for ZF Micro and VIA; discontinued production for NexGen and Transmeta)
 * TSMC (manufactures processors for AMD and VIA; discontinued production for Transmeta)
 * Fujitsu (manufactures processors for VIA; manufactured processors for Transmeta)

In the past:
 * UMC (manufactured processors for Rise, SiS, ALi, ULi and Nvidia; discontinued x86 production)
 * National Semiconductor (manufactured processors for ZF Micro; discontinued x86 production)
 * DEC (manufactured 486 processors for AMD; discontinued x86 production)

Manufactured and sold under its own name of x86-processors designed by others
Early Intel x86 CPU designs (up to the 80286) have in the past been second-sourced by the following manufacturers under licence from Intel:

Manufacturers that have served as second sources for other x86 CPUs include: