Native support for third-party tools like ModelSim-Altera 6.1g for advanced VHDL/Verilog simulation. System Requirements for Windows Quartus II Device Support Release Notes - Intel
Do NOT download from random "crack" or "serial key" websites. The Web Edition is free – you do not need a crack. Malicious actors embed malware in fake installers. Altera Quartus II 8.1 Web Edition -Windows- free download
Once the download is complete, follow these steps to install the Altera Quartus II 8.1 Web Edition: Native support for third-party tools like ModelSim-Altera 6
Despite its age, version 8.1 packed powerful features that remain useful today: Altera Quartus II 8.1 Web Edition -Windows- free download
Alternatively, you can set the license later inside Quartus: .