owl - knowledge base is described as 'owl is a minimalistic and very fast web application that allows you to organize a simple knowledge base from Markdown files. owl doesn't use a database, all files are stored in plain text' and is an app in the Development category. There are more than 10 alternatives to owl - knowledge base for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Linux, SaaS and PHP. The best alternative is BookStack, which is both free and Open Source. Other great apps like owl - knowledge base are GitBook (Freemium), Read The Docs (Free, Open Source), MkDocs (Free, Open Source) and mdBook (Free, Open Source).
BookStack is a free and open source knowledge management platform built on PHP. The system has been built around simplicity to ensure that adding information to it is not a chore. The content structure is built on the metaphors of Books, Chapters & Pages.
GitBook is a tool for building beautiful books using Git and Markdown. It can generate your book into multiple formats: Static Website: This is the default format, it generates a complete interactive static website.
Read the Docs hosts documentation for the open source community. It supports Sphinx docs written with reStructuredText, and can pull from your Subversion, Bazaar, Git, and Mercurial repositories. The code is open source, and available on github.
MkDocs is a fast, simple and downright gorgeous static site generator that's geared towards building project documentation. Documentation source files are written in Markdown, and configured with a single YAML configuration file.
ReadMe is a completely customizable and collaborative place for dynamic API and/or product documentation. Users can play around with the API right in the docs, automatically generated from a Swagger / OAS file. It also works as a knowledge base platform.