ModelSim
Synopsys VCS
Cadence Incisive
Riviera-PRO
gEDA Project
Logisim
VCS
Proteus PCB design
Circuit Tree
CircuitLab
Synopsys VCS
VCS
Riviera-PRO
Logisim
LTspice
Atanua
Circuit Tree is an automation engine that autonomously designs a circuit board design with given user inputs. Using Components define as proprietary models in its database it creates schematic, component placement and routing on the fly. This means that the automation engine auto selects various types of components for a circuit and knows where to place and route these components on board.
Circuit Tree design engine has been designed by engineers who have experience of more than 20 years designing all types of first time right designs.
ModelSim Circuit TreeSynopsys VCS - HDL Simulator of System Verilog, Verilog, and VHDL for ASIC design and verification.
CircuitLab - Sketch, simulate, and share your circuits, entirely in your browser -- no install required.
Cadence Incisive - System Verilog, Verilog, VHDL, SystemC HDL Simulator for ASIC Design and Verification
Riviera-PRO - System Verilog, Verilog. VHDL, SystemC, HDL simulator targeting ASIC and large FPGA designs.
VCS - Workforce management software for police & fire departments
gEDA Project - All about General Public License (GPL) and Electronic Design Automation (EDA) software tools