Mockplus vs OpenPencil
Mockplus
mockplus.comOpenPencil
openpencil.devSide by side
| Figure | Mockplus | OpenPencil |
|---|---|---|
| Price from | $2.98/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 17 | 1 |
| Spec score · Game UI Design Software | 9.1 (#5) | 7.9 (#24) |
| Integrations | Official integrations include Sketch, Photoshop, Adobe XD, Figma, Axure, Mockplus, Slack, Jira, Confluence and Lark. | The MCP server connects with Claude Code, Cursor, Windsurf, and other MCP clients over stdio or HTTP. |
| Product | Mockplus describes itself as an all-in-one product design platform for rapid prototyping, collaboration, and scalable design systems. | OpenPencil is an open-source, Figma-compatible design editor that also serves as a toolkit for building custom editors. |
| Security | The privacy policy describes encryption in transit, optional private-cloud encryption at rest, pseudonymization and least-privilege controls. | The MCP HTTP server enables authentication by default, binds TCP to 127.0.0.1 by default, and restricts file operations to a configured root while rejecting symlink escapes. |
Plans
Mockplus
- BasicFree
- Pro$5.95 a month
- EnterprisePrice not published
- Mockplus Cloud BasicFree
- Mockplus DT FreeFree
- Mockplus RP FreeFree
- Mockplus RP FreeFree
- Mockplus RP Team FreeFree
- Mockplus Cloud Pro$2.98 a month
- Mockplus DT Premier$3.29 a month
In their own words
OpenPencil
OpenPencil is a free, open-source design editor compatible with Figma files and a toolkit for building custom editors. It opens and saves native .fig files and supports copy-paste between Figma and OpenPencil. Design features include vector drawing, rich text, flexbox and CSS Grid auto-layout, components, variables, and multi-page documents. Exports cover PNG, JPG, WEBP, SVG, and Tailwind JSX, with image scales from 0.5× to 4×. Its built-in AI assistant provides 90+ editing and analysis tools and can connect to Anthropic, OpenAI, Google AI, and OpenRouter. Users supply their own provider key; OpenPencil provides no subscription or backend for that AI feature. A CLI inspects, exports, and analyzes .fig files with machine-readable JSON output. Peer-to-peer WebRTC enables real-time collaboration without accounts. The local-first product requires no account or server, offers desktop binaries for macOS, Windows, and Linux, and runs on the web with a touch-optimized mobile PWA. The Vue SDK targets teams embedding focused canvases, workflow tools, template editors, or AI-assisted editing surfaces.