Open-Source Gamma Alternative (2026, Slides)

Identifying Gamma · Mark source

Gamma official banner used to identify the commercial AI presentation product — Gamma official banner. Source · License: Gamma product image.

This hub lists open slide tools people compare with Gamma-class AI presentation products. Gamma is named only to identify that product class. Beautiful.ai is the same search family. We do not rank slide quality against Gamma.

Quick take.

Presenton — Apache-2.0 AI presentation generator and API that people compare with Gamma-class tools.
Slidev — MIT Markdown slides for developers — not an AI deck generator.

How we pick

Public GitHub repository we could open.
License copied from that repository.
Presentation or slide generation (AI or Markdown).
No unsourced “beats Gamma” claims.

Comparison

Name	License	Stars (GitHub)	Platforms	Runs locally	Key strengths
Presenton	Apache-2.0	11,215	Docker, Linux	Yes	Apache-2.0 AI presentation generator and API that people compare with Gamma-class tools.
Slidev	MIT	49,131	Node, Web	Yes	MIT Markdown slides for developers — not an AI deck generator.

Lead rows: Presenton (AI generator) and Slidev (Markdown). Workspace notes: Notion alternatives and Notion AI alternatives. Office suite: Microsoft Word alternatives. PowerPoint-class .pptx editors (not AI generators) hang off PowerPoint alternatives (DeckCraft, LibreOffice Impress, ONLYOFFICE).

Sourced snapshot (2026-10-19)

Field	Presenton	Slidev
Repository	presenton/presenton	slidevjs/slidev
Stars / forks	11,215 / 1,710	49,131 / 2,232
License	Apache-2.0	MIT
Last push	2026-10-19	2026-10-18
Job	AI presentation generator + API	Developer Markdown slides
Quality vs Gamma	Not independently tested	Not independently tested

How to choose

Need AI-generated decks and an Apache-2.0 API: Presenton.
Need git-friendly Markdown slides: Slidev.
Need a knowledge workspace, not slides: Notion alternatives.
Need a .pptx editor, not an AI generator: PowerPoint alternatives.

See also Writing & Office and Canva alternatives.

Listed options

Presenton

Apache-2.0 AI presentation generator and API that people compare with Gamma-class tools.

Apache-2.0

Slidev

MIT Markdown slides for developers — not an AI deck generator.

MIT

FAQ

Is there a free open-source Gamma alternative?

Two sourced rows (2026-10-19). Presenton (presenton/presenton) is Apache-2.0 with 11,215 stars; its GitHub description names Gamma and Beautiful.ai. Slidev (slidevjs/slidev) is MIT with 49,131 stars — Markdown slides for developers, not an AI generator. No quality ranking.

Presenton vs Slidev?

Presenton is an AI presentation generator/API. Slidev is a developer slide framework. Pick the job, not a star count.

Is Beautiful.ai covered here?

Same commercial class (AI decks). We did not create a second hub. This page is the landing URL.

Does Slidev call an LLM?

Not required. You write Markdown. That is the point of the row.

Sources & verification

Last verified 2026-10-19 · Last updated 2026-10-20· Edited by forkalt editors · Editorial policy

License notes are not legal advice. Read the original LICENSE. Trademark & disclaimer.