GitBook vs Writerside

GitBook is a documentation platform for teams creating, reviewing, and publishing branded documentation websites. Content can be written in a block-based visual editor or Markdown, organized through branch-based review, or synchronized with GitHub and GitLab. Published sites support custom domains, responsive layouts, SEO, preview deployments, and site variants. GitBook Agent can surface documentation gaps, draft updates, and review changes, while GitBook Assistant answers questions using documentation and connected sources. Teams can set tiered permissions and restrict documentation to authenticated users. The Free plan is free, includes one user, and limits GitBook Agent to 10 messages per week. Premium is $65 a month billed per site annually, plus $12 per user/month; Ultimate is $249 a month billed per site annually, plus $12 per user/month. Annual billing includes two months free, and a 14-day trial is available. Published documentation traffic is not limited.

Writerside is a tool for authoring, building, testing, and publishing technical documentation. It is now a plugin for JetBrains IDEs, not a standalone IDE; the plugin retains the standalone product's features and adds editor support and validation for supported code samples. Its components include an authoring plugin, a documentation builder, and a frontend for rendering help websites. Writerside supports Markdown and semantic markup, with single sourcing that lets teams reuse topics, sections, markup elements, filters, and variables across outputs. Built-in Git integration can automate builds, testing, and deployment with GitHub or GitLab hosting. A Docker builder can also support CI/CD pipelines, with instructions for GitHub, GitLab, and TeamCity. Writerside can generate PDFs with a table of contents and optional cover, header, and footer, and create API entity references from OpenAPI specifications. Local previews include search; published documentation uses an external search service by default. AI writing actions require the Grazie Pro plugin. The free plugin supports Linux, macOS, and Windows through JetBrains IDEs.