PanConvert is a multi-platform GUI for instrumenting Pandoc to convert between various text, file and markup formats. It allows selecting files, or ad-hoc conversion of entered/pasted markup. Pandoc needs to be installed, and handles MarkDown/CommonMark, LaTeX, OPML, ODT and EPUB formats.
mmu2html is a tool to convert text files with mixed markup and html code into html files. It can be used for static website generation. It has been designed with asciidoc in mind, but with additional support for menu creation, file linking, and other web site specific features.
Markdown Taglib is a JSP tag library to render Markdown text to HTML. It uses pegdown as dependency. Pegdown is a pure Java library for clean and lightweight Markdown processing.