Show HN: MarkShow – Create Slideshows with Markdown
This is very nice when you are willing to write basically code for your presentation, but nothing beats https://slides.com in productivity. It is the SaaS of the creator of Reveal.JS. I usually just make a monthly subscription when I need to make a new presentation, otherwise you can keep everything, just can't create new presentations. Basically "pay when you use it", very fair business model, worth every penny!