Free and open first

Best Interface Design Tools in 2026

26 apps
Research read 10 Oct 2026
How the order is worked out

1

Figma
by Figma
Free plan AndroidiPhoneMac+2

Figma covers several collaborative product and presentation workflows, with free and paid options. Check Starter's file and page limits and the billing terms for the plan or seat you need.

7.6 Free plan · paid from $12/user/mo (annual) Visit site
2

Fluid UI
by Fluid UI
Free plan AndroidiPhoneLinux+3

Fluid UI combines mockup creation, interactive prototyping and review features, with plans ranging from a free account to paid options.

7.6 Free plan · paid from $8.25/mo Visit site
3

Justinmind

Free plan AndroidAPIiPhone+4

Justinmind combines interactive prototyping, collaboration, reusable UI assets, and export options.

7.5 Free plan · paid from $19/mo · 10-day trial Visit site
4

Marvel
by Marvel
Free plan AndroidAPIiPhone+1

Marvel brings concept design, interactive presentations and developer handoff into one platform. Check the one-project free-plan limit and annual Pro pricing against your team's needs.

7.5 Free plan · paid from $12/user/mo (annual) · 7-day trial Visit site
5

MockFlow

Free plan ExtensionMacWeb+1

Choose MockFlow if you want wireframing and lite prototyping alongside a broad set of visual brainstorming tools.

7.4 Free plan Visit site
6

Mockplus
by Mockplus
Free plan AndroidExtensioniPhone+4

Mockplus combines prototyping with developer handoff and collaboration tools, with free options and paid plans for expanded use.

7.4 Free plan · paid from $5.95/user/mo (annual) Visit site
7

Moqups

Free plan APIExtensionWeb

Moqups brings several design and collaboration activities into one browser-based workspace.

7.2 Free plan · paid from $7/user/mo (annual) Visit site
8

Origami Studio

Free plan AndroidiPhoneMac

Choose Origami Studio if you need a free tool for creating interactive interface prototypes, with video export and mobile preview through Origami Live.

7.2 Free plan Visit site
9

ProtoPie
by ProtoPie
Free plan AndroidAPIiPhone+4

ProtoPie combines detailed interaction options with cross-device prototyping and a free starting plan. Check the free-plan limits and .pie-only export format against your workflow.

7.2 Free plan · paid from $25/mo Visit site
10

Pencil Project

Free plan LinuxMacWindows

Pencil combines interface-specific stencils, diagram shapes, and a range of export options in a desktop tool. Its links between document pages can carry through to web exports as hyperlinks.

7.1 Free plan Visit site
11

Penpot

Free plan APISelf-hostedWeb

Choose Penpot for collaborative design, prototyping, design systems, and developer code inspection, especially when self-hosting matters. Look elsewhere if a desktop app is required.

7.1 Free plan · paid from $7/mo · 14-day trial Visit site
12

Proto.io
by Proto.io
Free plan AndroidiPhoneWeb

Proto.io combines interactive prototyping, asset libraries, and sharing in a browser-based tool. The free plan has tight project, screen, and storage limits; paid monthly plans start at $29 a month.

7.0 Free plan · 15-day trial Visit site
13

UXPin
by UXPin
Free plan AndroidiPhoneMac+2

UXPin combines interactive prototyping, coded libraries and team sharing across web and desktop platforms.

7.0 Free plan · paid from $29/user/mo (annual) · 14-day trial Visit site
14

NinjaMock
by NinjaMock
Free plan Web

NinjaMock combines wireframing, linked prototypes, vector editing, collaboration, and video playback.

6.9 Free plan Visit site
15

Quant-UX
by Quant-UX
Free plan Self-hostedWeb

Quant-UX combines interactive prototyping with testing and built-in analytics, with unlimited prototypes and tests on its Free plan.

6.8 Free plan Visit site
16

Uizard
by Uizard
Free plan ExtensionWeb

Choose Uizard if you want web-based design with prototyping, sharing, collaboration, and developer handoff.

6.8 Free plan · paid from $12/user/mo (annual) Visit site
17

Visily

Free plan ExtensionWeb

Visily combines AI-assisted design inputs, templates, and team editing in a browser-based tool.

6.7 Free plan · paid from $11/user/mo (annual) Visit site
18

Wireflow

Free plan Self-hostedWeb

Wireflow combines user flow prototyping with shared editing, project permissions, and live chat in a free browser-based offering. Users can also fork or self-host the MIT-licensed project.

6.7 Free plan Visit site
19

Flinto

Free trial AndroidiPhoneMac+1

Flinto provides detailed interaction controls on Mac alongside a web-based Lite workflow. Its paid plans and platform requirements should be checked against your prototyping setup.

6.5 From $99 · 14-day trial Visit site
20

Wireframe.cc

Free plan Web

Choose Wireframe.cc when you need browser-based layout sketches with prototypes, reusable master pages, and file exports.

6.5 Free plan · paid from $12/user/mo (annual) Visit site
21

Axure RP
by Axure RP
Free trial Mac

Axure RP combines interactive prototyping with adaptive views and Cloud sharing. Compare Pro and Team based on whether you need team collaboration features.

6.2 From $29/user/mo · 30-day trial Visit site
22

Balsamiq Wireframes
by Balsamiq Wireframes
Paid MacWebWindows

Balsamiq Wireframes combines wireframing, prototyping, collaboration, and handoff across web and desktop platforms. Its three paid tiers differ mainly by project capacity and monthly AI credits.

5.9 From $16/user/mo (annual) · 14-day trial Visit site
23

Sketch

Free trial iPhoneMacWeb

Sketch covers product design from interface creation through prototyping and developer handoff, with web and iOS access for review and preview.

5.8 From $12/user/mo (annual) · 30-day trial Visit site
24

WireframeSketcher
by WireframeSketcher
Free trial LinuxMacWindows

WireframeSketcher combines desktop and Eclipse-based wireframing with reusable components, interactive prototypes, exports, and account-free sharing.

5.7 From $89 · 14-day trial Visit site
25

iRise

Paid Web

4.4 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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