Borderline is a marketplace for revenue-generating SaaS businesses only — you can contact founders and buy the codebase, domain, customers and revenue streams of profitable apps. For 8 years, we've helped founders sell over $2m in apps.
Sometimes, founders run out of time, money or motivation to continue building thier app. Borderline helps founders sell their app for cash so they can reinvest in whatever you're most excited about next!
Buyers & Sellers always talk directly
We don't take a cut, you keep 100% of the sale
Designed for revenue-generating SaaS apps
Proof of revenue required — no pre-revenue listings
No listing fees, no commission, no hidden costs
$1,200
CertGrid automates employee cert tracking for regulated industries. Expiry reminders, compliance matrix, PDF audit reports, Stripe billing integrated. 16K lines, 35 endpoints, deploys to Railway in minutes. Live demo included.
Valuation reason: Pre-revenue codebase sale. 16,151 lines of TypeScript, 35 API endpoints, 21 pages, Stripe billing integration, automated compliance engine, PDF/CSV exports, 3-role RBAC, and full audit trail. Replacement cost: $30,000–$80,000 and 3–5 months of senior full-stack development. Asking price $1,200 is over 95% discount to build cost. Priced for a fast close, not a drawn-out negotiation.
Tech Stack: Next.js 14, TypeScript, PostgreSQL, Prisma, Tailwind CSS, shadcn/ui, Stripe, Resend, Cloudflare R2, NextAuth.js
The seller has uploaded supporting documents like screenshots of revenue, traffic, or other sensitive data.
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