Sent is described as 'presentation tool for the commandline. It uses plaintext files to describe the slides and can also display images. Every paragraph represents a slide in the presentation' and is a presentation maker in the office & productivity category. There are more than 10 alternatives to Sent for a variety of platforms, including Online / Web-based, Mac, Self-Hosted solutions, Windows and Linux. The best alternative is LibreOffice - Impress, which is both free and Open Source. Other great apps like Sent are Google Slides, Sozi, Keynote and Marp.
We are Ludus, making a slides builder for creatives. We are mixing pro features from Sketch, with the power of internet (Sketchfab, Framer, CodePen ... are some of our integrations). So slides can be truly creative and limitless.