NameTypelast ΔtargetlicenseIPSsource
ARMISSISS2008ARMproprietary?[17]
ARMulatorISS2003ARMproprietary?[18], [19]
BochsFSE2020x86LGPL?[26], [27]
gem5FSS2020Alpha, ARM, MIPS, PowerPC, RISC V, SPARC, x86, Caches, Busses, NoCs, ...BSD like0.2-3 MIPS[3], [8], [9], [10]
MARSSx86FSS2019x86open-source0.15-0.3 MIPS[24], [25]
or1kissISS2020OpenRISC 1000Apache License 2.010-50 MIPS[16]
OVPsimFSS2020ARM, Synopsys ARC, MIPS, PowerPC, ...parts are open-source, free of charge for non-commercial useup to 1000 MIPS[8], [15]
PTLsimFSS2012x86GNU GPLv2?[8], [13]
QEMUFSE2020ARM, Microblaze, SPARC, PowerPC, x86GPLv250-200 MIPS[10], [22], [23]
ShadeISS1994SPARC, MIPSproprietary?[21]
SimpleScalarFSS2011Alpha, ARM, PowerPC, x86, Cachesopen-source, custom license0.35-10 MIPS[8], [14]
sniperISS2020x86MIT?[28]
Synopsys DesignWare ARC nSIMISS2020Synopsys ARCproprietary20MIPS (interpretive), 475 MIPS (JIT) [20]
Wind River SimicsFSS2020Alpha, ARM, MIPS, PowerPC, SPARC, x86proprietary?[8], [11], [12]