Find companies the moment they adopt your stack.
We flag the moment a company becomes observable on a tool — often before its site is even live, and before the big databases refresh. Pick one category; get a weekly CSV of fresh adopters that's exclusively yours.
First to know
We flag an adopter the moment it's publicly observable — often before its site is live, and before crawl-based databases refresh. You're early, not last.
Yours alone
Every lead we send is exclusive to you. We never resell it — so you're not working the same list as five competitors.
Calm weekly delivery
A CSV in your inbox every week, scoped to the one category you sell into. Skip the dashboard; work the list when your week needs leads.
10 categories. 89 vendors. Growing weekly.
Every category where adopting a new tool is a real buying signal — pooled into one feed.
Resend
Mailgun
SendGrid
Mailchimp
Postmark
Loops
Beehiiv
Klaviyo
Customer.io
Brevo
Clerk
Auth0
WorkOS
Stytch
Supabase
Okta
Kinde
Shopify
BigCommerce
Squarespace
Wix
Lemon Squeezy
Ashby
Greenhouse
Lever
Workable
Teamtailor
Vercel
Netlify
Cloudflare Pages
Render
Railway
Fly.io
Framer
Mintlify
GitBook
ReadMe
ScalarStatuspage
Instatus
Betterstack
Oh DearBuilt for
Sales teams at SaaS vendors
Resend, Clerk, Vercel, Ashby — get a weekly list of domains we first observe on your category, each one exclusive to you. Reach new adopters while the stack decision is still fresh.
Indie founders selling to a stack
Selling tooling for Shopify stores or Resend senders? Reach them in week one of adoption — and since every lead is yours alone, you're not racing five other vendors to the same inbox.
Growth & RevOps teams
Layer fresh adoption signal onto your TAM — a weekly, deduped category feed of newly observed companies, exclusive to you and ready for your sequences.
See it before you buy.
Drop your work email and we'll send a sample CSV of recent signals in any category. No call. No demo. Just data.
One sample per email. We don't sell your address. Unsubscribe in one click.
Try Starter risk-free. Cancel any time after that — no annual lock-in.
Built by Surf Apps LLC. Not VC-funded. Built to last, not to flip.
We tell you what we observed and when. We don't pretend a domain "just adopted" a vendor when we only just first saw it on them.