python-pptx
Leading#6 in Open sourcehigh confidence
The foundational Python library for programmatically generating and reading .pptx (~3.5k stars). Star count is modest but real-world adoption is enormous — it is the engine the Anthropic pptx skill and most PPTX tooling depend on, so it ranks above higher-starred JS tools on adoption depth.Our read
Why it ranks #6
Only about 3.5k GitHub stars, but it is the dominant Python PPTX library with deep downstream usage in document automation and agent tooling; repository development is comparatively slow.Here is the catch
no rendering engine, so visual QA needs PowerPoint or LibreOffice
many advanced PowerPoint features are unsupported or low-level
maintenance cadence is slower than newer presentation projects
Does this well
creates standard editable PowerPoint files
stable API and broad Python ecosystem usage
excellent foundation for repeatable deck automation
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
Create and modify PPTX filesSlides, shapes, text and imagesCharts and tablesTemplate and placeholder manipulation
Sources we read
Quick facts
More in this area
The rest of the Open source column.- 1reveal.jsThe de-facto standard open-source HTML presentation framework (~72k stars) — Markdown authoring, PDF export, speaker notes, LaTeX and auto-animate. The most-adopted tool in the entire category.
- 2SlidevThe modern developer favorite (~47.8k stars): Markdown-driven decks powered by Vite/Vue 3 with live coding, Mermaid, KaTeX and PPTX/PDF/PNG export. Also ships its own official Agent Skill (see below).
- 3impress.jsPrezi-style CSS3 3D and zoom transitions with full HTML/CSS/JS control (~38.2k stars). Very high adoption, though less actively maintained than reveal.js and Slidev.
- 4remarkA simple in-browser, Markdown-driven slideshow (~13k stars) for people comfortable with HTML/CSS. A long-standing lightweight option.
- 5SpectacleA React/JSX-based presentation library (~10.1k stars) from Formidable Labs, strong for live code demos and the React ecosystem; actively maintained.
- 7Marp (marp-cli)A mature Markdown-to-slides ecosystem (~3.7k stars for the CLI, plus a popular VS Code extension) exporting HTML/PDF/PPTX. Lower star count than the leaders but a well-adopted Markdown-native toolchain.