The production-ready NextJS boilerplate with authentication, payments, email, and everything you need to launch fast.
Email/password, magic links, OAuth providers. Session management with JWT refresh tokens built in.
Stripe, LemonSqueezy, and Paddle integrations. Subscriptions, one-time, and usage-based billing.
Resend integration with beautiful templates for welcome, reset, and notification emails.
User management, analytics overview, feature flags, and system health monitoring.
Granular permissions system with team roles, org-level access, and API key management.
Built-in event tracking, funnel analysis, and revenue metrics. Privacy-first by default.
Prisma ORM with PostgreSQL. Migrations, seeding, and connection pooling configured out of the box.
Dynamic OG images, structured data, sitemaps, and robots.txt. Score 100 on Lighthouse.
Deploy to Vercel, Railway, or Fly.io in minutes. CI/CD pipeline included with GitHub Actions.
Real-time dashboard with the KPIs that matter.
"Saved us at least 3 weeks of setup. We went from idea to paying customers in a weekend."
"The auth and billing integration alone is worth 10x the price. Rock-solid and well-documented."
"Finally a boilerplate that doesn't feel like a boilerplate. Clean code, great DX, beautiful UI."
One-time purchase. Lifetime updates. No subscriptions.
A deep dive into our optimization strategy for serverless NextJS deployments.
Drag-and-drop analytics widgets, custom date ranges, and team sharing.
The exact steps we took to grow MantleKit from side project to profitable SaaS.
The engineers and designers behind MantleKit.
Founder & CEO
Former Stripe engineer. Obsessed with making payments infrastructure invisible.
Lead Engineer
Full-stack architect who designed the config-driven theme system from scratch.
Head of Product
Turns customer feedback into shipping features. Previously at Vercel and Linear.
Feature-for-feature, MantleKit delivers more out of the box.
| Feature | MantleKit | Others |
|---|---|---|
| 5+ production themes | ✓ | ✗ |
| 3 payment providers | ✓ | ✗ |
| Built-in admin dashboard | ✓ | ✗ |
| Ecommerce module | ✓ | ✗ |
| One-time pricing | ✓ | ✗ |
| Role-based access control | ✓ | ✓ |
Foundation
Built the first prototype with auth, payments, and a single theme in 4 weeks.
Expansion
Expanded the theme library, billing options, and launch tooling across the core stack.
Current
11 themes, ecommerce, admin tooling, 3 payment providers, and the CLI setup flow.
Roadmap
AI page builder, a theme marketplace, and a plugin ecosystem remain on the roadmap.