When comparing VirtualBox vs Process Hacker, the Slant community recommends Process Hacker for most people. In the question“What are the best power user tools for Windows?” Process Hacker is ranked 8th while VirtualBox is ranked 9th.
Ranked in these QuestionsQuestion Ranking
Pro Free and mostly open source
VirtualBox is available for free with source code available here. A "VirtualBox Extension Pack" that includes virtual USB 2.0, VirtualBox RDP & PXE boot support is available only under a commercial license.
Pro Real-time information on disk access
Pro Can be set as your default task manager
Pro 10x more detail and information about usage of PC resources and processes
Pro Detailed overview of system activity with highlighting
Pro See programs with active network connections
Pro Can create, edit and control services
Pro Can track which processes are using a file
Pro Open source
You can find the code here.
Pro View detailed stack traces with kernel-mode
Supports WOW64 and .NET.
Pro Graphs and statistics to quickly track down resource hogs and runaway processes
Con Inferior performance
Apart from second-class performance in virtualization, there are some visual glitches with Windows 8.1 on Mavericks.
Con Confusing interface and lacking usability features
VirtualBox might be a bit confusing for beginners - it requires an understanding of a lot more technical details than other VMs.