When comparing StyleDocco vs Hologram, the Slant community recommends Hologram for most people. In the question“What are the best tools for building and generating css living styleguides?” Hologram is ranked 4th while StyleDocco is ranked 6th. The most important reason people chose Hologram is:
Hologram has a variety of plugins and extensions to choose from, and the ability to create [custom renderers](https://github.com/trulia/hologram#custom-code-example-renderers).
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Pros
Pro Easy to use
StyleDocco is easy to learn (uses Markdown) and quick to set up.
Pro Very customizable
Hologram has a variety of plugins and extensions to choose from, and the ability to create custom renderers.
Pro Supports variety of file types
Hologram supports Markdown and JavaScript, as well as popular preprocessors (Less, Sass, and Stylus).
Cons
Con Not an active project
The last release was January 2014 and there has been no activity over the past year.
Con Requires Ruby
Con Poor error reporting
Currently Hologram has limited error reporting, sometime giving unhelpful messages or failing silently.