Rival Cortex
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Added April 4, 2026
· Last analysed April 10, 2026 · via 
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 10 April 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
Rival Cortex is partway there, with a thorough launch checklist and clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and incomplete email security.
Launched on Product Hunt on April 4, 2026. The site is hosted on TransIP, with a domain registered the day of launch. The crawl picked up 11 technologies on this site, covering transactional email, hosting, auth, and CSS frameworks. The stack includes Auth.js, Next.js, and React.
For context, it's a rare TransIP sighting, just 27 in our data.
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Tech Stack (11) · Indie stack
| DNS |
TransIP DNS
|
| Hosting | TransIP |
Vercel
(2)
|
|
| Security | HSTS (2) |
| Transactional email |
Amazon SES
|
Resend
|
| Auth |
Auth.js
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(5)
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (1)
| Name | Lifetime | Detected as |
|---|---|---|
| __Host-authjs.csrf-token | session | Auth.js |
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI copy signals | +5 |
| AI writing signals | +5 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.