When comparing Octopress vs Grav, the Slant community recommends Octopress for most people. In the question“What are the best static site generators?” Octopress is ranked 4th while Grav is ranked 17th. The most important reason people chose Octopress is:
Octopress is designed to remove all the time-consuming and frustrating tasks you usually have to deal with when using Jekyll. You don't have to write your own HTML templates or do any configuration to get started. The default template also takes care of any basic CSS/JS you need to write to get going.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very easy to use
Octopress is designed to remove all the time-consuming and frustrating tasks you usually have to deal with when using Jekyll. You don't have to write your own HTML templates or do any configuration to get started. The default template also takes care of any basic CSS/JS you need to write to get going.
Pro Lots of plugins (from Jekyll + 3rd party)
Another advantage of being based on Jekyll is default access to the extensive plugin system for Jekyll. There are also plugins developed specifically for Octopress.
Pro Based on Jekyll
As Octopress is simply a framework on top of Jekyll, it benefits from being based on one of the most popular site generators available. The primary benefit is that it is backed by git and is built in such a way that the site can be easily re-generated if the content changes.
Pro Uses Markdown for writing
Uses the Markdown syntax for writing blogs.
Pro Can be hosted with any provider
Since Grav is built with PHP, it can be hosted on almost all web hosting providers. If the provider supports Wordpress, they also support Grav.
Pro Easy creation of templates and content
Supports Twig for templating with Parsedown for fast Markdown and Markdown Extra support.
Pro Easy to use admin panel
Well designed, easily usable and modern admin panel is a boost as it lets Clients edit the content easily.
Pro Custom fields for content
YAML-based page headers allow you easily add custom dynamic fields to your content.
Pro Open-source and free
Pro Extensive Documentation
Documentation is not an afterthought! Grav has a dedicated documentation site plus loads of tutorials and guides.
Pro Extensive documentation
Documentation is not an afterthought. Grav has a dedicated documentation site plus loads of tutorials and guides.
Pro Built-in package manager
Pro CLI Tools
Command line tools such as dependency installation, cache clearing, user creation, and backups.
Cons
Con Not Actively Developed
Last commit is Feb 22, 2016, Social media hasn't been updated. Dead project?
Con Inefficient
Adding a new post, for example, causes the entire blog to be regenerated.