Marp (also known as the Markdown Presentation Ecosystem) provides an intuitive experience for creating beautiful slide decks. You only have to focus on writing your story in a Markdown document.

A simple, in-browser, markdown-driven slideshow tool.

carnac - A utility to give some insight into how you use your keyboard

gitpitch - The Markdown Presentation Service For Everyone on GitHub, GitLab, Bitbucket, GitBucket, Gitea, and Gogs.