OpenSlides

What OpenSlides is

OpenSlides is a free, open-source desktop app for creating animated presentations about code. Magic Move transitions animate changes between code states, and presenters can reveal code line by line while adjusting dim amount, size-up scale, and transition timing. The app offers light and dark presentation themes and 16 syntax themes. Presentations support full-screen mode, keyboard navigation, optional autoplay, and timing for individual slides. Users can create, organize, rename, duplicate, import, and export projects, then arrange slides in stacks. Search across slides is supported, alongside thumbnails and hover previews. The maker says projects stay on the user’s computer and the app can run without an internet connection. It is presented for content creators, educators, and developers preparing tutorials, classes, live builds, conference talks, and technical demos. OpenSlides is listed for Linux, macOS, Windows, and self-hosted use, and its repository identifies the MIT license. The maker notes that macOS builds are ad-hoc signed; full notarization requires a paid Apple Developer certificate.

Who it suits

OpenSlides is aimed at content creators, educators, and developers presenting code in tutorials, classes, live builds, conference talks, or technical demos. It suits people who want offline presentation work kept on their own computer.

Getting started

1. Visit the OpenSlides project website.
2. Use the version for Linux, macOS, or Windows, or choose a self-hosted setup.
3. Create a slide project and add code slides.
4. Choose presentation and syntax themes, then set reveal effects and timing.
5. Arrange slides in stacks and present full-screen or with optional autoplay.

Verdict

OpenSlides focuses on code presentations, combining animated transitions and reveal controls with project organization and offline use. macOS users should account for the signing and notarization limitation.