quartus ii:

Quartus ii is a comprehensive PLD/FPGA development software.

modelsim:

Modelsim is HDL language simulation software.

Second, the characteristics are different:

1、quartus ii:

It supports various design input forms including schematic diagram, VHDL, VerilogHDL and AHDL, and embeds its own synthesizer and emulator, which can complete the complete PLD design process from design input to hardware configuration.

2、modelsim:

It provides a friendly simulation environment, and it is the only emulator in the single-chip kernel that supports mixed simulation of VHDL and Verilog. It adopts direct optimization compilation technology, Tcl/Tk technology and single-core simulation technology, which has fast compilation and simulation speed, and the compiled code is platform-independent, which is convenient for protecting IP core.

Extended data

Maxplus II, as Altera's previous generation PLD design software, has been widely used because of its excellent ease of use. At present, Altera has stopped supporting the update of Maxplus II, and Quartus II not only supports the enrichment of device types and the change of graphical interface.

There are several different versions of ModelSim: SE, PE, LE and OEM, among which SE is the most advanced version, while OEM versions are all integrated in the design tools of FPGA manufacturers such as Actel, Atmel, Altera, Xilinx and Lattice.

Baidu encyclopedia -modelsim

Baidu Encyclopedia -Quartus II