Acunetix Web Vulnerability Scanner provides the functionality to scan multiple websites at the same time through the web-based Acunetix WVS Scheduler.
The Acunetix Scheduler will run a new WVS instance for each website scheduled to be scanned. The number of instances that the Acunetix WVS Scheduler will launch can be configured from the Configuration > Application Settings > Scheduler node. The more instances of the scanner allowed to run, the more websites can be scanned in parallel.
The Acunetix WVS Scheduler also offers the flexibility of adding and scheduling new scans even when other scans are already running. Since it is web based, it can also be configured to accept remote connections, so you can access the scheduler interface and download scan results from anywhere with an internet connection.
Note: You can also run multiple instances of the Acunetix Web Vulnerability Scanner GUI to scan multiple websites at the same time.