Fei Design Mode
Generates and validates code changes directly in production codebases, rendering results for immediate review and approval.
≈ 273visits/mo
Emerging · estimate, read 2026-09-19
- For
- Product managers, designers, and engineers shipping features faster without engineering bottlenecks
- Price
- Free plan · From $125/mopricing page, read 2026-09-20
- Activity
- Actively maintainednothing dated on the site
- Company
- founding year not on record
- Runs as
- API
- Ship product features without waiting in engineering backlog
- Design and build UI changes directly in the product
- Turn support feedback into product improvements
- #15
Kiro
Converts prompts into executable specifications and implements code with parallel agents that validate correctness.
32.7kActiveFrom $20/user/mo - #20
Devin
Executes software engineering tasks including code migrations, bug fixes, testing, and documentation generation across multiple repositories.
30.6kActiveFrom $20/mo - #21
Remy prompt
Builds websites, designs slides, and generates images through conversational AI.
30.9knot read— - #27
Nous Research
Trains and releases open source language models with infrastructure for distributed training.
33.7knot read— - #31
Replit
Builds and deploys web apps, websites, and agents from natural language descriptions.
278knot readFrom $20/mo - #33
Lovable
Builds production-grade web and mobile applications from natural language descriptions.
198knot readFree plan2023
What is Fei Design Mode?
Generates and validates code changes directly in production codebases, rendering results for immediate review and approval.
Who is Fei Design Mode for?
Product managers, designers, and engineers shipping features faster without engineering bottlenecks
How much does Fei Design Mode cost?
Fei Design Mode has a free plan; paid plans start at $125/mo, per its pricing page on 2026-09-20.
Do people use Fei Design Mode?
Emerging: ≈ 273 visits a month · estimate, 2026-09.
Is Fei Design Mode still maintained?
Actively maintained.
What are alternatives to Fei Design Mode?
In Developer tools, by use: Kiro, Devin, Remy prompt, Nous Research, Replit, Lovable.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one row at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.