OpenSlideX
An open-source, local-first presentation tool where each deck is an editable MDX file on your own machine, combining AI-assisted slide generation with full manual control and no cloud lock-in.
🔗 Visit OpenSlideX
Description
Most modern presentation tools — Google Slides, Canva, Gamma — keep your deck locked inside their own cloud account: you can export a PDF, but the actual editable source lives on their servers, in their format. OpenSlideX flips that around. Think of it like the difference between writing in a proprietary note app versus a plain text file you keep on your own laptop — a deck in OpenSlideX is just a folder on your computer containing an editable presentation.mdx file, so you always have direct access to the real source, can put it under version control, and aren't dependent on a company's cloud staying online.
Technically, it's an open-source, MIT-licensed local-first editor built on MDX, React, TypeScript, and Vite, with a Chromium-based renderer for exports to HTML, MDX, or PPTX (including PPTX import that preserves text geometry). It layers AI assistance on top of that local workspace — using AI agents to draft or move slides forward — through a custom MotionDoc MDX format that supports text effects, morphing animations, and click-based navigation, plus a local MCP server that lets tools like Claude Desktop or Codex work with your deck directly. It ships as one-line standalone installers for macOS and Windows that need no Node.js or npm, alongside six bundled starter templates covering financial, data, editorial, product, strategy, and training decks.
💬 Our review
The short version: if the idea of your presentation source being trapped in someone else's cloud bothers you, OpenSlideX's local-first, MDX-based approach is a genuinely appealing model, but it's a very young project (18 GitHub stars, 43 commits) so treat it as promising rather than proven.
Against Google Slides, Canva, or Gamma — all cloud-hosted, free-to-start with paid tiers for AI features — OpenSlideX's differentiator is that the deck is just files on your disk, versionable in git, with no account or subscription required since it's fully MIT-licensed and free. Against other MDX-based slide tools like Slidev (a more mature, actively-used open-source option in the same space, aimed at developers writing code-heavy technical talks), OpenSlideX adds AI-assisted generation and MCP agent integration as its distinguishing pitch, but has far less community adoption and battle-testing so far. For a developer comfortable with some setup who wants full control over their slide source and can accept rough edges from a small, early-stage project, it's a fair pick; for anyone who just wants a polished, reliable deck tool today, the more established players are the safer bet.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Free and open source (MIT license); no paid tier, GitHub Sponsors listed as 'coming soon'
Pros
Local-first — decks are plain MDX files on your own machine, no cloud lock-in
Free and open source under the MIT license
AI-assisted generation plus full manual editing control
MCP integration lets AI agents like Claude Desktop work directly with the deck
Cons
Very early-stage project — 18 GitHub stars, 43 commits
Less mature and battle-tested than established open-source alternatives like Slidev
No hosted or collaborative editing — it's a local, single-user tool
Requires comfort with local installation and a file-based workflow