Based on our record, GitBook seems to be more popular. It has been mentiond 2 times since March 2021. 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.
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 / about 3 years ago
Docusaurus - Easy to maintain open source documentation websites
HelpCrunch Knowledge Base - Deliver instant answers to customers 24/7 with help articles
MkDocs - Project documentation with Markdown.
Slab - Slab is a knowledge hub for the modern workplace. We help teams unlock their full potential through shared learning and documentation. Slab features a beautiful editor, blazing fast search, and dozens of integrations like Slack, GitHub, and G Suite.
Doxygen - Generate documentation from source code
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.