pen.dev vs UXPin

pen.dev is a canvas for building software and a vector design tool integrated with development environments. Its editor works with components, variables, themes, scripts and shaders, and can import Figma files and HTML. It can export to HTML, CSS and Tailwind, as well as PNG, JPEG, WEBP and PDF. Users can work with its integrated agent or connect external agents through MCP; the available plans specify how many agents can run in parallel. Documented integrations include Claude Code, Codex, Gemini CLI, Antigravity, OpenCode, Kiro and Claude Desktop. Integrated provider options include OpenAI, Anthropic, Google Gemini, Cursor, GitHub Copilot, xAI, OpenRouter and other API-key providers. Its.pen design file is open JSON with an open schema. Tools include a Chrome extension for importing webpages, IDE extensions and an npm-installed CLI requiring Node.js 22.19 or later. The pricing page says pen.dev stays free until plans launch. The Free plan is free; Pro is $16 a month; Ultra is $48 a month.

UXPin is a design and prototyping platform for creating interactive prototypes with states, logic, conditional flows, variables, and dynamic content. It runs on the web and has UXPin apps for Mac and Windows, plus Mirror apps for iOS and Android. Core includes conditional logic, variables, and expressions, along with built-in coded libraries such as MUI, Tailwind UI, and Ant Design. Teams can share prototypes with unlimited viewers and commenters, and use public or team comments. Integrations include Slack, FullStory, Jira, Storybook, and Git, with a Figma plugin and Sketch import also listed. The Free plan allows two prototypes and 50 AI credits. Core costs $49 a month per seat when billed monthly, or $29 a month per seat billed yearly; Growth costs $69 a month per seat, or $40 a month per seat billed yearly. Core includes 200 monthly AI credits and seven-day version history, while Growth includes 500 monthly credits, 30-day history, roles and permissions, SSO, and 2FA. A 14-day trial is available.