Traffic Twister has had several versions over the years, and V10 is the best yet.
The bot allows users to run multiple threads (Creating insane levels of traffic) and load proxies directly from a .txt file.
Version 10 is very stable, and uses a lot less CPU than some of the earlier releases. The bot can be ran via VPN or directly from your own PC.
Try to use fresh proxies where possible and you'll get some really impressive results - we found 20 threads (IE 20 people on your site at once) ran really well. All the traffic is visible from Google Analytics.
Traffic Twister v10
All Files Tested and Updated October 2017.