Best Proto.io Alternatives in 2026
Updated
20 platforms from web design software ranked against Proto.io on the same published basis.
- 1Proto.io vs Justinmind
- 2Proto.io vs ProtoPie
- 3Proto.io vs Marvel
- 4Proto.io vs Penpot
- 5Proto.io vs Supernova
- 6Proto.io vs Slickplan
- 7Proto.io vs ContentTools
- 8Proto.io vs Plasmic
- 10Proto.io vs UXPin
- 11Proto.io vs Visily
- 12Proto.io vs Anima
- 13Proto.io vs Google Web Designer
- 14Proto.io vs MockFlow
- 15Proto.io vs Zeplin Flows
- 16Proto.io vs Bootstrap Icons
- 17Proto.io vs Uizard
- 18Proto.io vs Wondershare Mockitt
- 19Proto.io vs Figma Slides
- 20Proto.io vs Axure RP
- 21Proto.io vs Bootstrap Studio
Proto.io alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Justinmind | 7.3 | Free plan | $19/mo | Android, API, iOS, Mac, self-hosted, Web, Windows |
| 2 | ProtoPie | 7.3 | Free plan | $25/mo | Android, API, iOS, Mac, self-hosted, Web, Windows |
| 3 | Marvel | 7.2 | Free plan | $12/mo | Android, API, iOS, Web |
| 4 | Penpot | 7.2 | Free plan | $7/mo | API, self-hosted, Web |
| 5 | Supernova | 7.1 | Free plan | $35/mo | API, Mac, Web |
| 6 | Slickplan | 6.8 | No | $10.79/mo | API, Web |
| 7 | ContentTools | 6.6 | No | — | API, Web |
| 8 | Plasmic | 5.9 | Free plan | $39/mo | self-hosted, Web |
| 10 | UXPin | 5.9 | Free plan | $29/mo | Android, iOS, Mac, Web, Windows |
| 11 | Visily | 5.9 | Free plan | $14/mo | Browser, Web |
| 12 | Anima | 5.8 | Free plan | $500/mo | Browser, Web |
| 13 | Google Web Designer | 5.8 | Free plan | Free | Linux, Mac, Windows |
| 14 | MockFlow | 5.8 | Free plan | Free | Browser, Mac, Web, Windows |
| 15 | Zeplin Flows | 5.8 | Free plan | $12/mo | Linux, Mac, Web, Windows |
| 16 | Bootstrap Icons | 5.7 | Free plan | Free | Web |
| 17 | Uizard | 5.7 | Free plan | $3.25/mo | Browser, Web |
| 18 | Wondershare Mockitt | 5.7 | Free plan | $10/mo | Web, Windows, Mac, Linux |
| 19 | Figma Slides | 5.6 | No | $3/mo | Android, iOS, Linux, Mac, Web, Windows |
| 20 | Axure RP | 5.3 | No | $29/mo | Mac |
| 21 | Bootstrap Studio | 5.3 | No | $29/mo | Linux, Mac, Windows |
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Questions about Proto.io alternatives
What is the best alternative to Proto.io?
Justinmind, number 1 in web design software with a score of 7.3 out of 10. The others here: ProtoPie, Marvel, Penpot and 16 more.
What is the best free alternative to Proto.io?
Justinmind is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.