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Open-source Synthesia alternative

One open-source alternative to Synthesia, with its features, GitHub activity and licence.

The open-source alternative to Synthesia listed on Enlisted is Open AI UGC.

Open AI UGC is listed under AI tools. It shipped code in the last 30 days, can be self-hosted and uses a permissive licence.

Last updated October 2, 2026 · ranked by GitHub stars, growth and recent commits

Open AI UGC

Open-source studio for generating vertical AI video ads with synthetic actors from a script and reference image, positioned as an alternative to Arcads and MakeUGC.

GitHub stars
347
Last commit
yesterday
Licence
MIT
Self-hosted
Yes

Open AI UGC is a free, open-source application for creating user-generated-content style video ads with AI actors. The README presents it as an alternative to commercial services such as Arcads and MakeUGC, without per-seat pricing, a locked actor library or vendor watermark. It targets marketers and small teams who produce short-form social ads.

The workflow is to paste a script, upload a reference face or product image, choose a video model, and generate a 9:16 vertical clip suited to TikTok, Reels or Shorts. The tool supports several video generation models, including Veo 3.1, Seedance 2, Grok Video and Happy Horse 1. Generation is powered by Muapi, an outside API service, so model usage is handled there rather than on your own hardware.

The app is built with JavaScript and Next.js, is MIT licensed, and can be self-hosted, with a live demo hosted on Vercel. The README also links related open-source projects for workflow building, video clipping and social scheduling, plus agent skills that let coding assistants automate batches of ad variants from the terminal.

Key features

  • Script-to-video AI actor ads
  • Reference face or product image upload
  • Choice of several video generation models
  • 9:16 vertical output for social platforms
  • Self-hostable Next.js application
  • Agent skills for batch ad generation

Pricing: The app is free and MIT licensed. Video generation runs through Muapi, so check its pricing for model usage costs.

Synthesia alternatives: questions

What is the best open-source alternative to Synthesia?
Open AI UGC is the only open-source alternative to Synthesia listed on Enlisted so far: Open-source studio for generating vertical AI video ads with synthetic actors from a script and reference image, positioned as an alternative to Arcads and MakeUGC.
Is Open AI UGC free?
Open AI UGC is open source, so the code is free to use under its licence, and it can be self-hosted on your own server or computer.
How does Enlisted rank Synthesia alternatives?
By a score built from GitHub stars, star growth over the last 30 days and how recently the code changed. Open AI UGC shipped code in the last 30 days. Data is refreshed daily, and nobody can pay to move up.

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