Open Source Design Tools Apps

A free, full-featured web-based audio and waveform editor that runs entirely in the browser — no plugins, no installs, just open and edit.

Free open-source AI image upscaler reaching 13K resolution using Stable Diffusion, ControlNet, and Tiled Diffusion — a self-hostable alternative to Magnific.

Open-source, cross-platform 2D/3D game engine with Vulkan, Metal, and WebGL support for web, mobile, and instant gaming platforms

Visual LLM workflow platform with RAG pipelines, agent capabilities, and model management for building production AI applications.

The offline-first diagram editor that puts security above all else — no account, no data leaving your machine, no compromises.

All-in-one open-source whiteboard combining mind maps, flowcharts, and freehand drawing on a single infinite canvas.

Open-source experience management platform for in-app, website, email, and link surveys — privacy-first and fully self-hostable.

Drag-and-drop retro Game Boy game creator that compiles real ROMs — no coding required.

No-code, open-source game engine for building 2D, 3D and multiplayer games — publish to iOS, Android, Steam and the web.

Free, MIT-licensed 2D and 3D game engine with one-click multi-platform export and no royalties.

A free, open source procedural 2D design tool that unifies vector, raster, motion graphics, and generative art in a single node-based nondestructive workflow.

Open-source low-code platform for building internal tools with drag-and-drop UI, reactive data bindings, and real-time collaboration.

A React component that lets developers embed a fully-featured, isometric network diagram editor directly into their applications.

Professional-grade free and open source digital painting application built for artists, illustrators, and VFX professionals who need studio-quality tools without a subscription.

Turn natural language into professional draw.io diagrams with AI, cloud icons, and an MCP server for your IDE.

An open-source, AI-first visual editor that lets designers and developers build, style, and deploy React apps directly in code — no handoff required.

Local-first, open-source Claude Design alternative that turns your existing coding agent CLI into a full agentic design studio — with 259+ skills, 142+ design systems, and sandboxed artifact delivery across web, desktop, and mobile surfaces.

An open-source design editor that reads native Figma files, ships a built-in AI assistant with 100+ design tools, and offers real-time serverless collaboration — all without giving up your files.

Free, open-source video editor for web, desktop, and mobile — no watermarks, no subscriptions, built with a Rust core and plugin-first architecture

Free, open-source screen recorder with zooms, annotations, and system audio capture

A browser-based whiteboard that doubles as a full development environment, letting you draw and code in the same canvas.

Open-source design platform with GPU-accelerated canvas, native design tokens, and MCP-powered AI workflows for teams that ship fast.

The open-source visual builder that lets teams design React apps and websites with drag-and-drop while integrating seamlessly with your codebase.

Free, open-source 2D CAD application for Windows, macOS, and Linux with DXF/DWG support and JavaScript scripting.

Preview and interact with your responsive web design across every device size simultaneously — no more manual resizing.

Free, open-source visual website builder that exports clean HTML/CSS — no lock-in, no subscription, host anywhere

The free, browser-based 3D Gaussian Splat editor — inspect, edit, crop, optimize and publish splat scenes without installing anything.

Single-executable pixel art editor that starts instantly with no accounts, no setup, and no internet required.

Open source visual development platform with complete CSS control, headless CMS integration, and full infrastructure ownership