GitBook might be a bit more popular than Docsie. We know about 2 links to it since March 2021 and only 2 links to Docsie. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
If you need just the customer-facing knowledge base there are a lot of tools out there that can build the website for you: archbee.io, docsie.io, docusaurus. Source: about 2 years ago
I looked at https://docsie.io/, and it seems like it would work perfectly, except I would have to pay a ton to have more than 3 pages on it (if I understand the pricing). Source: about 3 years ago
You can have both a landing page (e.g.: www.your-project.dev) and a documentation website (e.g.: docs.your-project.dev). For creating documentation website GitBook is better fit than Gitlanding. GitBook is free for open source Projects (you just need to issue a request). - Source: dev.to / about 2 years ago
GitBook is a collaborative documentation tool that allows anyone to document anything—such as products and APIs—and share knowledge through a user-friendly online platform. According to GitBook, “GitBook is a flexible platform for all kinds of content and collaboration.” It provides a single unified workspace for different users to create, manage and share content without using multiple tools. For example:. - Source: dev.to / almost 3 years ago
ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.
Docusaurus - Easy to maintain open source documentation websites
Documize - Enterprise-grade wiki and knowledge management platform
MkDocs - Project documentation with Markdown.
HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.
Doxygen - Generate documentation from source code