Plasmic – open-source Webflow + Retool + React CMS

In plain words

Plasmic is an open-source visual builder that combines website design, internal tool creation, and content management. It targets developers and teams who want to build web applications visually while maintaining code control. The platform integrates Webflow-like design capabilities with Retool's internal tool features and React development workflows, allowing users to generate and customize code alongside visual editing.

written from the facts on this page · September 2026

• 
  Plasmic2021 · plasmic.app · ▲330

  Next-gen visual builder/design tool for any website or app

• 
  Plasmic — open source visual builder for React2023 · github.com · ▲10

  Visual builder for React. Build apps, websites, and content. Integrate with your codebase. - plasmicapp/plasmic

• 
  Plasmic — web design tool that plugs into React and other codebases2021 · plasmic.app · ▲66

  Plasmic lets you build powerful web apps super fast, from internal tools to user facing products. Integrate with your codebase for unlimited possibilities.

• 
  Onlook for Web2025 · onlook.com · ▲574

  The open-source, local-first Figma for React apps

• 
  refine.new2023 · ▲462

  100% open-source React framework to build web apps

• 
  refine2022 · github.com · ▲480

  100% open source React framework to build web apps 3x faster

• 
  /dev/null▲472

  a social network for devs

  Dev tools · 2d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 25d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 22d ago · openbot.run

• 
  Talanoa▲340

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 27d ago · corespeed.io

• 
  Flowla▲1,119

  Digital sales rooms that wow buyers

  Growth · 2023 · flowla.com

• 
  Passionfroot Discovery▲962

  Discover & book top creators to promote your product

  Growth · 2023 · passionfroot.me

• 
  Re:catch▲939

  If Google Form & Calendly had a baby

  Growth · 2023 · recatch.cc

• 
  Pitch 2.0▲886

  Create, share and analyze presentations faster than ever

  Work · 2023 · pitch.com

• 
  LeadDelta 3.0▲883

  CRM built for modern teams & creators powered by AI

  AI · 2023 · leaddelta.com

• 
  SpeedVitals▲829

  Hi HN, I’m Kashish, one of the co-founders of SpeedVitals, a platform for testing & monitoring website performance with a major emphasis on Core Web Vitals. Until now, our platform has only focused on Synthetic/Lab testing, such as Lighthouse tests and TTFB tests. But now, we have developed a Real-User Monitoring platform that doubles up as a Web Analytics tool. One major feature we have that most RUM tools lack is Performance Audits. Just like Lighthouse audits work on Lab test data, our audits work across all the real-user visits and gives suggestions on what task to prioritize first.…

  Dev tools · 2023 · speedvitals.com