Dev tools · alternatives · 2026

24 alternatives to Webflow Flexbox UI Builder

Build flexible, responsive layouts - without writing code

Webflow Flexbox UI Builder is a design tool that enables users to create flexible, responsive layouts without writing code. It serves designers and developers who need to build web interfaces visually. The tool uses… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Webflow Flexbox UI Builder launched in 2016; newer entries below may have overtaken it.

1. 1
   FlexboxPatterns▲374

   Build awesome user interfaces with CSS flexbox

   2016 · flexboxpatterns.com · its alternatives →

2. 2
   Flex▲325

   Flexbox's are a pain to write, Flex makes it easy.

   2019 · its alternatives →

3. 3WD
   Webflow - Design responsive websites visually▲503

   2013 · playground.webflow.com · its alternatives →

4. 4
   Webflow CMS▲642

   Build professional dynamic websites without any code

   2015 · its alternatives →

5. 5
   Grid Layout Builder by Webflow▲194

   A completely visual way to build CSS grid–powered layouts

   2018 · its alternatives →

6. 6FE
   Flexible Editor – An Open Source Flex-Box Based Layout Editor▲40

   2016 · briandiehr.com · its alternatives →

7. 7
   New Responsive Editor by Bubble▲270

   Design beautiful web apps for any screen size.

   2022 · its alternatives →

8. 8
   Webflow▲386

   All-in-one web design platform

   2013 · webflow.com · its alternatives →

9. 9
   Webflow 3D Transforms▲318

   Build 3D interactions visually, without writing any code

   2015 · 3d-transforms.webflow.com · its alternatives →

10. 10
    Waffle Grid▲280

    An easy to use flexbox grid system.

    2017 · lucasgruwez.github.io · its alternatives →

11. 11
    UI Builder + Mockup tool▲315

    Sketch UI mockups directly on live websites in Chrome

    2025 · chromewebstore.google.com · its alternatives →

12. 12
    Flexbox.io – a free video series on learning CSS Flexbox▲236

    A simple 20 video course that will help you master CSS Flexbox

    2015 · flexbox.io · its alternatives →

13. 13
    Flex Layout Attribute▲109

    Layout helper based on CSS flexbox specification.

    2016 · progressivered.com · its alternatives →

14. 14
    WebWave▲509

    Ditch the grids, create websites like you design graphics

    2023 · webwave.me · its alternatives →

15. 15
    Layouts.dev▲699

    A notebook for building interfaces with Tailwind & shadcn/UI

    2024 · layouts.dev · its alternatives →

16. 16
    Webflow App Gen▲376

    Build full-stack web apps natively in Webflow with AI

    Nov 2025 · its alternatives →

17. 17
    Superflow▲286

    Build Webflow websites faster than ever

    2022 · getsuperflow.co · its alternatives →

18. 18
    Dropflow, a CSS layout engine for node or <canvas>▲404

    For the last 5 years I've been working on a layout engine that targets CSS2 and some more modern properties. Live demo: https:&#x2F;&#x2F;chearon.github.io&#x2F;dropflow&#x2F; It matches browsers in all cases I can find where they agree, and it's fast. It supports `position`, `inline-block`, `z-index`, and complex properties like `float` and `vertical-align`. It doesn't support high-level layout like flexbox or grid yet, but you can get intrinsics to easily divide space yourself and paint multiple layout trees. It has a great text layout implementation, and supporting non-Latin scripts is a…

    2024 · github.com · its alternatives →

19. 19SW
    Struggle with CSS Flexbox? This Playground Is for You▲315

    Experiment with different flex properties to understand how they affect layout. Adjust the controls below to see changes in real-time and copy the generated CSS code.

    2025 · yoavsbg.github.io · its alternatives →

20. 20IF
    Interactive Flexbox Tutorial▲13

    2015 · flex-tutorial.herokuapp.com · its alternatives →

21. 21
    Webflow Interactions 2.0▲404

    Design and build web animations and interactions

    2017 · its alternatives →

22. 22
    Adalo 2.0▲189

    Build your app once, publish it anywhere

    2023 · adalo.com · its alternatives →

23. 23
    Cards - Webflow UI Kit▲233

    Free Clonable UI Kit prepared fully in Webflow Designer

    2018 · janlosert.com · its alternatives →

24. 24
    Uiflow Studio▲259

    No-code platform for visually developing production web apps

    2021 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →