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Lasso

SaaS

Developer tool that lets you click any element in a running app, describe a change and review the AI-generated source diff before applying it.

lasso.byorello.space
Lasso homepage screenshot

About Lasso

Lasso is a visual coding tool for web apps. You select an element on the real rendered interface, tell Lasso in plain language what to change and review the resulting diff to the source code before it is applied. It resolves the selected element to the component file, props and styles behind it, so the context is grounded in your actual code rather than a mockup.

It works with existing setups: for Vite and Next.js projects you run a single command and an overlay attaches to the dev server. Changes can be previewed, files inspected and edits undone, and the work can be merged like any other feature branch. Newer collaboration features include voice and speech-to-text dictation, live cursors and presence, voice conversations inside the tool and a shared clipboard for snippets and URLs.

The site offers documentation, a GitHub link and a pricing section, and it invites visitors to join a waitlist, which suggests access is still limited. A banner announces recently shipped live cursors and voice features.

Key features

  • Select any element in a running app
  • Plain-language change requests
  • Source diff review before applying
  • Mapping of elements to files, props and styles
  • Undo and preview of changes
  • Vite and Next.js support
  • Voice dictation and live cursors for teams
  • Shared clipboard for snippets

Good fit for

  • Developers making quick UI tweaks without hunting for files
  • Teams reviewing visual changes as code diffs
Tags
developer-tools
ai-coding
visual-editing
nextjs
vite
code-diff
collaboration

Lasso: questions and answers

What is Lasso used for?
Lasso is a developer tool that lets you click any element in a running app, describe a change and review the AI-generated source diff before applying it. It is a good fit for developers making quick UI tweaks without hunting for files and teams reviewing visual changes as code diffs.
Is Lasso free?
Yes. Lasso has a free plan, and paid plans start at $29 per month.
Is Lasso open source?
No. Lasso is proprietary (closed-source) software. In the Developer Tools category, open-source options include Zed, Docs MCP Server and CTX.
What are some alternatives to Lasso?
Lasso competes with Cursor, v0 and Lovable.

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