Asciidoctor
Asciidoctor is an open-source text processor and publishing toolchain that converts AsciiDoc markup into various output formats, such as HTML, PDF, EPUB, and DocBook. It is built on Ruby and provides a fast, extensible, and standards-compliant way to create technical documentation, books, and articles. The tool supports rich formatting, cross-references, tables, and includes, making it popular for documentation-heavy projects.
Developers should learn Asciidoctor when they need to create and maintain high-quality documentation, especially in technical or open-source projects, as it offers better performance and more features than the original AsciiDoc processor. It is ideal for use cases like API documentation, user manuals, and academic papers, where consistent formatting and multi-format output are required. Its integration with build tools and version control systems streamlines documentation workflows in development pipelines.