penpot / penpot
Penpot: The open-source design platform for Product teams that need scalable collaboration.
penpot / penpot
Annamaria50 / Exodus-Fake-Balance
Exodus Fake Balance - wallet UI simulation tool for BTC, ETH, SOL, XRP, and 200+ assets. Customize displayed balances in a controlled demo environment with persistent visual settings and screenshot-ready previews. Designed for testing, demonstrations, and UI prototyping without altering actual blockchain balances or transactions.
nexu-io / open-design
The 1st Collaborative AI Design Agent Workspace. Local-first and open source. Create motion, prototypes, websites, apps, dashboards, presentations, images, and videos with your team and AI agents. Share work, exchange feedback, and iterate together in one workspace.
mingrammer / diagrams
:art: Diagram as Code for prototyping cloud system architectures
microsoft / promptflow
Build high-quality LLM apps - from prototyping, testing to production deployment and monitoring.
evolus / pencil
The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.
mockoon / mockoon
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
JimLiu / baoyu-design
Run Claude Design locally as an Agent Skill — Cursor, Claude Code & more. Produce polished UI mockups, prototypes, decks & wireframes as self-contained HTML, without claude.ai/design. Best with Opus or Claude.
plannotator / effective-html
Agent skills for useful HTML artifacts, wireframes, interactive prototypes, plans, and diagrams.
open-quantum-safe / liboqs
C library for prototyping and experimenting with quantum-resistant cryptography
storytold / figcraft
FigCraft: interface design and prototyping; an open-source, clean-room reimplementation of collaborative design workflows in pure Rust
aagentah / nw_wrld
nw_wrld is an event-driven sequencer for triggering visuals using web technologies. It enables users to scale up audiovisual compositions for prototyping, demos, exhibitions, and live performances. Users code their own visual modules, then orchestrate them using the project's native UI composer.
Devin-AXIS / deepseek-design
DeepSeek Harness 可编辑设计系统：AI 生成、可视化编辑、模板市场与 PPT｜Native Design & PPT Studio for DeepSeek Harness.
SimpleITK / SimpleITK
SimpleITK: a layer built on top of the Insight Toolkit (ITK), intended to simplify and facilitate ITK's use in rapid prototyping, education and interpreted languages.
apache / causeway
Use Apache Causeway™ to rapidly develop domain-driven apps or modular monoliths in Java, on top of the Spring Boot platform. Write your business logic in entities, domain services or view models, and the framework dynamically generates a representation of that domain model as a webapp, GraphQL or RESTful API. For prototyping or production.
zenstory-ai / novel-to-game
Agent skills for source-grounded novel-to-game adaptation (小说改编游戏 / story to game): cited design docs, target-runtime builds, evidence-based QA. Three playable browser examples. For Claude Code, Codex, and Kimi Code.
brettchalupa / usagi
A simple 2D game engine for rapid prototyping with Lua, featuring live reload and cross-platform export; this repo is a mirror and development happens at: https://codeberg.org/brettchalupa/usagi
vchelaru / Gum
Flexible layout tool for creating UI on any platform
podo / awesome-framer
A curated list of awesome things related to Framer prototyping tool
Erudika / para
Multitenant backend server for building web and mobile apps rapidly. The backend for busy developers. (self-hosted or hosted)
kurtosis-tech / kurtosis
A platform for packaging and launching blockchain infra. Think docker compose for blockchain
koide3 / iridescence
Visualization library for rapid prototyping of 3D algorithms [C++, Python]
Bearisbug / Quilt
AI-native infinite-canvas design tool: describe an app, get multi-screen HTML designs on an infinite canvas, click through them as a prototype, and let your local coding agent read and write the canvas over MCP.
thrixel / build-world
Build interactive 3D worlds with high-quality assets from Thrixel and your AI agent of choice.
pablostanley / squig
Wireframing tool where real UI components render as hand-drawn sketches
ReScienceLab / super-prototyping
A product-validation system for AI agents: idea → logo → product → brand → launch video in two hours. Desktop app + skills for Claude Code and Codex.
qwqzhanqwq / Godot-CSG-Blockout
Fast 3D level blockout & prototyping plugin for Godot 4. Features pie menu workflow, array/spreader tools, and one-click mesh baking.
MiladJoodi / MockData.ir
Fake REST APIs with live JSON. Docs, playground, and ready-to-use endpoints for frontend prototyping.
itspatmorgan / design-studio
An open source prototype sandbox for designers and product managers who build.