Input-Output
A free, node-based calculator that visualizes the calculation process. Build and connect your logic.
Added May 31, 2026
· Last analysed May 31, 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 31 May 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.
Input-Output is largely in shape, with a thorough launch checklist and clean crawl signals. Main gaps: no Permissions-Policy, incomplete legal pages, and no email security records.
Launched on Product Hunt on May 31, 2026. The site is hosted on Vercel. The crawl picked up 12 technologies on this site, covering package cdn, analytics, auth, and CSS frameworks. The stack includes Auth.js, Next.js, and React.
For context, it's on one of the most common stacks we track, shared by 14,978 launches and more locked down than the typical Product Hunt launch.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (12)
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
(2)
|
| Security | HSTS |
| Auth |
Auth.js
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
|
| Package CDN |
jsDelivr
(2)
|
unpkg
(2)
|
|
| Realtime |
Pusher
|
| Analytics |
Google Analytics
(3)
|
| Tag management |
Google Tag Manager
|
Infrastructure
Email Security
Storage (8)
| Name | Lifetime | Detected as |
|---|---|---|
| __Host-authjs.csrf-token | session | Auth.js |
| __Secure-authjs.callback-url | session | Auth.js |
| Key | Size | Detected as |
|---|---|---|
| Input-Output-save-57de3e89-39a1-4f6a-b096-081c73ec5bcd | 14 KB | - |
| Input-Output-save-9ba2e462-f692-44a7-b840-fc31b5f5b691 | 12 KB | - |
| Input-Output-save-e886f03d-2a16-45dc-a0fc-19e2386d440e | 7.4 KB | - |
| Input-Output-saves-index | 581 B | - |
| Input-Output-settings-v3 | 217 B | - |
| Input-Output-templates-initialized-v1.2 | 4 B | - |