The following is a list of major vendors in the business of licensing IP cores.
S3 Group
Cadence Design Systems
Cosmic Circuits
Dolphin Integration
Omniphy
Synopsys
INVECAS
Omni Design Technologies
Broadband modem and error correction
Cadence Design Systems
CEVA, Inc.
IMEC
On2 Technologies (through acquisition of Hantro)
Synopsys (through acquisition of Virage Logic)
Tensilica (now part of Cadence Design Systems)
Cryptography and Security
Barco Silex
intoPIX
Malaysia Microelectronic Solutions Sdn Bhd
IntelliProp, Inc - AES-ECB, AES-XTS
Secure-IC
S3 Group
Cadence Design Systems
Cosmic Circuits (now part of Cadence Design Systems)
Dolphin Integration
Omniphy
INVECAS
Actel
Altera
ARM
Barco Silex
Cadence Design Systems (through acquisition of Denali Software)
Eureka Technology
Faraday Technology
Lattice Semiconductor
Rambus
S3Craft Technologies
Synopsys
Xilinx
ARM
Cadence Design Systems (through acquisition of Denali Software)
Synopsys (through acquisition of Virage Logic)
Omniphy
INVECAS
ChipStart
Pico Computing
Open-Silicon
University of Heidelberg
ChipStart
Omniphy
Bluetooth SW Stack, Link Layer and PHY
ARM (through acquisition of Dicentric and Sunrise Micro Devices)
Mindtree Technologies
CEVA
ARM (through acquisition of Artisan Components)
Cadence Design Systems
MoSys, Inc.
Vitesse Semiconductor
Omniphy
INVECAS
Omniphy
Altera - Nios II
ARM - ARM
Cambridge Consultants - XAP
Cortus - APS1, APS3R, APS5, FPS6
CEVA, Inc. - CEVA-X DSP
Digital Blocks, Inc. - 8051 with Standard and Configurable Peripherals
Dolphin Integration - 8051, 80251
EnSilica - eSi-RISC
Freescale and others - ColdFire
IBM and others - PowerPC
Intel - x86 Atom
Imagination Technologies - MIPS
[MicroCore Labs] - MCL86 - 8086/8088 core (cycle compatible) & MCL51 - 8051 core
OpenCores - OpenRISC
Oregano Systems - 8051
Qualcomm - ARM
Renesas - SuperH
Sun Microsystems and others - OpenSPARC
Synopsys - ARC
Tensilica - Xtensa
Texas Instruments - MSP, ARM
Western Design Center - 6502, 65816, 65xx
Xilinx - MicroBlaze
Silicon Image Inc.
Synopsys
Omniphy
BitSim AB - Bit-MIPI CSI-2 (serial camera interface)
Silicon Image Inc.
ARM (through acquisition of Artisan Components)
Faraday Technology
Synopsys
TSMC
Aragio Solutions (Robust ESD, Small cells, multiple foundries)
INVECAS
InnoRoute - Ethernet, VLAN, IPv4, IPv6, EFM Bonding
Digital Blocks, Inc. - UDP, IPv4, IPv6, TCP, RTP Hardware IP Verilog Packet Processors
ARM (through acquisition of Artisan Components)
ChipStart
Dolphin Integration
M31 Technology
MoSys, Inc.
Synopsys (through acquisition of Virage Logic)
eSilicon
INVECAS
Eureka Technology - PCI, AXI, AHB, SD, SDIO, eMMC
Digital Blocks, Inc. - AMBA AXI4, AXI3, AHB, APB
S3 Group
ARM (through acquisition of Artisan Components)
Cadence Design Systems
Cosmic Circuits
CEVA, Inc.
TSMC
INVECAS
S3 Group
Cosmic Circuits
Dolphin Integration
ASICS World Services, LTD
IntelliProp, Inc
ASICS World Services, LTD
L&T Technology Services
CEVA, Inc.
IntelliProp, Inc
MoSys, Inc.
Synopsys Inc.
Standard cell libraries
ARM (through acquisition of Artisan Components)
ChipStart
Dolphin Integration
Faraday Technology
M31 Technology
Synopsys
INVECAS
Eureka Technology - SDRAM, DDR, NOR, NAND, eMMC
IntelliProp, Inc - NAND, eMMC
PacketArc - 1Gbit/s and 10Gbit/s Ethernet switches
Flexibilis - 1Gbit/s Ethernet switches
Video processors and computer graphics
ARM (through acquisition of Falanx and Logipard)
Vivante Corporation (offers GPU IP solutions for applications in the mobile, consumer, automotive, embedded, real time/mission critical, and home entertainment markets.)
Tata Elxsi - HEVC/H.264
Barco Silex - JPEG, JPEG2000, VC-2, MPEG-2, Video Over IP
AllegroDVT - HEVC/H.264
Alma Technologies - H.264, JPEG, JPEG2000
AMPHION Semiconductor - HEVC/H.265, AVC/H.264, JPEG, JPEG2000
CEVA, Inc.
Chips&Media
Google (through acquisition of On2 Technologies)
Imagination Technologies
intoPIX - JPEG2000, TICO, ST2022, AVB
NGCodec, Inc.
Silicon Image Inc.
Think Silicon Ltd — GPUs and Display Controllers for Wearables and IoT devices
videantis GmbH—Processor IP for computer vision and video coding
Digital Blocks, Inc. - TFT LCD Controller IP Verilog, 2D Graphics IP Verilog
BitSim AB - TFT LCD Controller IP VHDL, 2D Graphics and video IP VHDL
List of semiconductor IP core vendors Wikipedia (Text) CC BY-SA