Best Open Source Alternatives to HeyGen

Compare the best free and open-source alternatives to HeyGen — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 2 alternatives

HeyGen

Proprietary SaaS

PricingFreemium

Platformsweb

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HeyGen alternatives compared

Open-source alternatives to HeyGen, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
SadTalker	14,175	MIT	LinuxWindows	Yes	Jun 2024	Visit
MuseTalk	6,866	MIT	Linux	No	Sep 2025	Visit

Top open-source HeyGen alternatives

SadTalker14,175MIT

SadTalker is an open-source alternative to Synthesia that animates portrait images into talking videos using audio-driven 3D facial motion models.

LinuxWindows

vs HeyGen: a free, open-source option you fully control, licensed MIT.

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MuseTalk6,866MIT

Self-hosted real-time lip synchronization. MuseTalk replaces cloud avatar APIs with local latent inpainting for complete data privacy and video control.

Linux