Atanua
Logisim
BOOLR
Digital Logic Design
Digital
Wired Logic
CircuitLab
LogicCircuit
ModelSim
Synopsys VCS
Cadence Incisive
Riviera-PRO
gEDA Project
Logisim
VCS
Proteus PCB design
Atanua ModelSimLogisim - Logisim is an educational tool for designing and simulating digital logic circuits.
Synopsys VCS - HDL Simulator of System Verilog, Verilog, and VHDL for ASIC design and verification.
BOOLR - Open-source digital logic simulator
Cadence Incisive - System Verilog, Verilog, VHDL, SystemC HDL Simulator for ASIC Design and Verification
Digital Logic Design - Digital Logic Design is a Software tool for designing and simulating digital circuits.
Riviera-PRO - System Verilog, Verilog. VHDL, SystemC, HDL simulator targeting ASIC and large FPGA designs.