I built a SaaS starter kit after 30 years of shipping web apps. Here's the philosophy behind it.
I've been building web applications for 30 years. Every time I start a new SaaS project, I burn the first 2-3 weeks rebuilding the same infrastructure: auth, billing, teams, email, analytics. It has nothing to do with my actual idea, but I can't ship without it.
So I built VelocityKit, a production-ready SaaS starter on Next.js 16, Supabase, and Stripe. One-time purchase ($199), no recurring fees.
But I didn't want to build just another boilerplate. I had some strong opinions about what a starter kit should actually be.
You should be able to read the code.
No proprietary wrappers. No abstraction layers that hide how things work. Supabase, Stripe, Resend, PostHog are all open source or easily swapped. When you need to customize something (and you will), you're working with the actual libraries, not fighting through someone else's opinions about how you should use them.
It should work with AI, not against it.
This is the part I'm most excited about. Context files, patterns, and prompts are baked into the codebase so tools like Cursor, Claude Code, and Copilot can actually understand your project structure. Instead of fighting your AI assistant to follow your conventions, it already knows them. I use AI-assisted development daily on this codebase and designed it around that workflow.
It should be complete on day one.
Auth with SSR, Stripe billing wired correctly, teams with roles and invitations, row-level security, email templates, analytics with AI tracking, a blog/changelog with MDX, and 20+ AI prompts for common SaaS workflows. The stuff that takes weeks to get right is already done.
The pricing should feel fair.
$199 one-time with 12 months of updates. Pay once, own it, ship your thing. No seat licenses, no recurring tax on your business.
I'd love feedback from this community. What would make something like this a no-brainer purchase for you?
