Open alternatives4
Open-source apps that replace Microsoft PowerPoint, Google Slides and more
ONLYOFFICE Docs is an office suite for documents, spreadsheets, presentations and forms that several people can edit together, and it opens Microsoft Office files well. You run it on your own server, or use ONLYOFFICE's separate free desktop app.
LibreOffice Impress is a slide presentation program that is part of the LibreOffice office suite. It is for people who make slide decks on a computer.
reveal.js is a free framework for making slide presentations that run in a web browser, written in HTML or Markdown. It is for people comfortable editing code who want web-based slides with features like speaker notes and PDF export.
Slidev lets you write presentation slides as plain text in Markdown, with code highlighting and live demos built in. It is aimed at developers and technical presenters who want to build slides in a code editor and show them in a browser.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for presentations? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
How Open Source Everything works