Choosing a design or prototyping tool is difficult when a long list mixes component workflows, visual design platforms, and newer experiments. This September 2026 snapshot uses ToolVitals scores together with the supplied health and shipping signals to show which open/source-visible tools currently rank highest.
The ranking includes open/source-visible tools and orders them by ToolVitals score descending, then uses health and shipping to break equal composite scores. GitHub stars are context only, not a ranking input.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | Storybook | OSI-approved OSS | MIT | 98 | 99 | 91042 | 98 | 🟢 Excellent |
| 2 | Penpot | OSI-approved OSS | MPL-2.0 | 98 | 98 | 59886 | 98 | 🟢 Excellent |
| 3 | Open Pencil | OSI-approved OSS | MIT | 97 | 97 | 8272 | 97 | 🟢 Excellent |
| 4 | OpenPencil | OSI-approved OSS | MIT | 97 | 97 | 5904 | 97 | 🟢 Excellent |
| 5 | Pascal | OSI-approved OSS | MIT | 97 | 96 | 23253 | 96 | 🟢 Excellent |
| 6 | Presenton | OSI-approved OSS | Apache-2.0 | 95 | 97 | 10172 | 96 | 🟢 Excellent |
| 7 | Tixl | OSI-approved OSS | MIT | 95 | 96 | 5096 | 95 | 🟢 Excellent |
| 8 | Ashim | OSI-approved OSS | AGPL-3.0 | 95 | 95 | 2622 | 95 | 🟢 Excellent |
| 9 | Webstudio | OSI-approved OSS | AGPL-3.0 | 95 | 95 | 8931 | 95 | 🟢 Excellent |
| 10 | EasySchematic | OSI-approved OSS | AGPL-3.0 | 92 | 94 | 127 | 93 | 🟢 Excellent |
| 11 | Repath Studio | OSI-approved OSS | AGPL-3.0 | 89 | 93 | 170 | 91 | 🟢 Excellent |
| 12 | Wayscriber | OSI-approved OSS | MIT | 87 | 94 | 735 | 90 | 🟢 Excellent |
| 13 | Graphite | OSI-approved OSS | Apache-2.0 | 91 | 85 | 27208 | 89 | 🟢 Excellent |
| 14 | Terrazzo | OSI-approved OSS | MIT | 90 | 84 | 456 | 87 | 🟢 Excellent |
| 15 | Excalidraw | OSI-approved OSS | MIT | 89 | 81 | 131605 | 86 | 🟢 Excellent |
| 16 | ArcMindAI | OSI-approved OSS | MIT | 88 | 80 | 162 | 85 | 🟢 Excellent |
| 17 | Silex | OSI-approved OSS | AGPL-3.0 | 86 | 78 | 2960 | 83 | 🟢 Excellent |
| 18 | Knotter | OSI-approved OSS | GPL-3.0 | 81 | 83 | 4 | 82 | 🟢 Excellent |
| 19 | Next AI Draw.io | OSI-approved OSS | Apache-2.0 | 83 | 72 | 35770 | 79 | 🟢 Good |
| 20 | Drawtonomy | OSI-approved OSS | Apache-2.0 | 79 | 77 | 108 | 78 | 🟢 Good |
| 21 | Freecut | OSI-approved OSS | MIT | 77 | 72 | 2161 | 75 | 🟢 Good |
| 22 | Awatif | OSI-approved OSS | MIT | 74 | 74 | 179 | 74 | 🟢 Good |
| 23 | Infinipaint | OSI-approved OSS | GPL-3.0 | 73 | 67 | 485 | 70 | 🟢 Good |
| 24 | Drawnix | OSI-approved OSS | MIT | 70 | 52 | 14698 | 63 | 🟢 Good |
| 25 | Modulz | OSI-approved OSS | MIT | 58 | 37 | 19260 | 49 | 🟡 Fair |
| 26 | Poster Design | OSI-approved OSS | AGPL-3.0 | 55 | 33 | 4845 | 46 | 🟡 Fair |
| 27 | app-store-screenshots | OSI-approved OSS | MIT | 46 | 17 | 6854 | 34 | 🔴 Needs Attention |
| 28 | Onlook | OSI-approved OSS | Apache-2.0 | 46 | 16 | 26709 | 34 | 🔴 Needs Attention |
| 29 | Superdesign | OSI-approved OSS | AGPL-3.0 | 31 | 13 | 6967 | 24 | 🔴 Needs Attention |
| 30 | EasyLogic Studio | OSI-approved OSS | MIT | 17 | 0 | 500 | 10 | 🔴 Needs Attention |
| 31 | MaterialVect | OSI-approved OSS | Apache-2.0 | 17 | 0 | 2 | 10 | 🔴 Needs Attention |
| 32 | Screenlite | OSI-approved OSS | MIT | 14 | 0 | 365 | 9 | 🔴 Needs Attention |
| 33 | Animockup | OSI-approved OSS | MIT | 0 | 0 | 1925 | 0 | 🔴 Needs Attention |
| 34 | CanvyDocs | OSI-approved OSS | AGPL-3.0 | 0 | 0 | 141 | 0 | 🔴 Needs Attention |
| 35 | Meshy | OSI-approved OSS | MIT | 0 | 0 | 422 | 0 | 🔴 Needs Attention |
Top 3 Highlights
Storybook ranks first with a ToolVitals score of 98, a health score of 98, and a shipping score of 99. It is listed as OSI-approved OSS under the MIT license. Its supplied description focuses on building, documenting, and testing UI components in isolation, making it a focused choice for component workflows; its 91,042 GitHub stars are context only.
Penpot ranks second with a ToolVitals score of 98, a health score of 98, and a shipping score of 98. It is listed as OSI-approved OSS under the MPL-2.0 license. The supplied description identifies it as a design and prototyping platform, directly matching the use case; its 59,886 GitHub stars are context only.
Open Pencil ranks third with a ToolVitals score of 97, a health score of 97, and a shipping score of 97. It is listed as OSI-approved OSS under the MIT license. The supplied description calls it an AI-native design editor and open-source Figma alternative, making it relevant for AI-assisted design and prototyping; its 8,272 GitHub stars are context only.
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