Best open-source AI image generators (2026)
Open models and free local apps for AI image generation: run FLUX, Stable Diffusion, Qwen-Image and more on your own computer, with no per-image fees and full control. We list 12 tools for open-source image generation below, each with a link-checked page, pricing as the maker states it and alternatives.
Updated
12 tools: 9 open source, 1 free or freemium, 1 paid, usage-based or enterprise, 1 pricing on the maker's site.
Selling AI-assisted art? Check each tool's license and see the short commercial-use and copyright note.
ComfyUI
Node-based open-source engine for image and video generation workflows. Run models like Wan, LTX and Hunyuan locally or in Comfy Cloud, with an agent that builds workflows.
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Invoke
Open-source layered canvas for Stable Diffusion and FLUX, with inpainting, control layers and node workflows.
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Stability AI
Maker of Stable Diffusion, offering image models, an API and self-hosted enterprise licenses.
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Krita AI Diffusion
Generative fill, inpainting and live painting inside the free Krita app, built so the artist stays in control.
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Qwen-Image
Alibaba's open image model, strong at rendering text and editing images precisely.
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SD.Next
All-in-one local web UI for image and video generation with many models and backends.
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Pollinations.ai
Open-source image and text generation API you can call with a simple URL, popular with hobby developers.
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SwarmUI
Local web UI for image and video models with a simple tab plus full ComfyUI workflows underneath.
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FLUX (Black Forest Labs)
Black Forest Labs' FLUX image models, through the API or as open weights. Many other creative apps build on them.
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Draw Things
Runs Stable Diffusion, FLUX and other models fully on your Mac, iPhone or iPad.
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Penpot
Open-source design and prototyping tool with an official MCP server so AI agents can read and edit design files.
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Upscayl
Free open-source desktop app for upscaling images on your own computer.
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GitHub repos (11)
| Repo | GitHub stars | Licence |
|---|---|---|
| ComfyUI ↗ | 138,580 | — |
| Penpot ↗ | 61,335 | — |
| Upscayl ↗ | 50,719 | — |
| Invoke ↗ | 28,740 | — |
| Stability AI ↗ | 27,301 | — |
| Krita AI Diffusion ↗ | 10,738 | — |
| Qwen-Image ↗ | 8,408 | — |
| SD.Next ↗ | 7,355 | — |
| Pollinations.ai ↗ | 5,224 | — |
| SwarmUI ↗ | 4,680 | — |
| FLUX (Black Forest Labs) ↗ | 2,789 | — |
11 repos. Stars and licence come from each repo, checked when the listing was last verified.
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