HHVM (HipHop Virtual Machine) vs Spacemacs: What are the differences?

HHVM (HipHop Virtual Machine): An open-source virtual machine designed for executing programs written in Hack and PHP. HHVM uses a just-in-time (JIT) compilation approach to achieve superior performance while maintaining the flexibility that PHP developers are accustomed to. To date, HHVM (and its predecessor HPHPc before it) has realized over a 9x increase in web request throughput and over a 5x reduction in memory consumption for Facebook compared with the PHP 5.2 engine + APC; Spacemacs: Emacs advanced Kit focused on Evil: The best editor is neither Emacs nor Vim, it's Emacs *and Vim!*. Since version 0.101.0 and later Spacemacs totally abolishes the frontiers between Vim and Emacs. The user can now choose his/her preferred editing style and enjoy all the Spacemacs features Even better, it is possible to dynamically switch between the two styles seamlessly which makes it possible for programmers with different styles to do seat pair programming using the same editor..

HHVM (HipHop Virtual Machine) can be classified as a tool in the "Virtual Machine" category, while Spacemacs is grouped under "Tools for Text Editors".

"Very fast" is the primary reason why developers consider HHVM (HipHop Virtual Machine) over the competitors, whereas "Advanced support for Vim key bindings" was stated as the key factor in picking Spacemacs.

HHVM (HipHop Virtual Machine) and Spacemacs are both open source tools. Spacemacs with 21.3K GitHub stars and 4.9K forks on GitHub appears to be more popular than HHVM (HipHop Virtual Machine) with 16.9K GitHub stars and 2.94K GitHub forks.

According to the StackShare community, Spacemacs has a broader approval, being mentioned in 12 company stacks & 162 developers stacks; compared to HHVM (HipHop Virtual Machine), which is listed in 44 company stacks and 88 developer stacks.