Quartus II Subscription Edition v11.1 includes MegaCore IP Library
Select a previous version of Quartus II:
You may be exposed to a vulnerability issue if you have installed or plan to install Quartus prime/Quartus II software from v11.0 to v18.0 to a location with space(s) in the path. See this KDB solution for more details.
Download large, standalone installation files to manually install complete software and device support.
Note: If you download and install only the QuartusÂ® II software, subsequently you must also download and install the device support . You do not have to install all the device support files. You can install only the device support files that you need.
Quartus II Subscription Edition
Quartus II Subscription Edition Install relevant device files
If you do not have Internet access or if you require a DVD, you can download and use the DVD ISO file to create your own installation DVD for installing Altera's software and device support. You must first install the Altera Complete Design Suite (ACDS) software (Windows or Linux version) before you install the ACDS Devices software. You must install both the ACDS software (Windows or Linux version) and the ACDS Devices software.