Next-Level
Web Development

Innovative, high-performing websites and apps tailored to your needs.

Barkley Mulch

Barkley Mulch

sendoff.ai

sendoff.ai

chatworth.io

chatworth.io

contentpress.ai

contentpress.ai

Christopher Royce Hair Studios

Christopher Royce Hair Studios

Cardile Law

Cardile Law

Hudson Heights

Hudson Heights

NJ Property Brothers (njpb)

NJ Property Brothers (njpb)

Bobs Express

Bobs Express

Cocoon USA

Cocoon USA

Jersey Green Giants

Jersey Green Giants

Dutch Hill

Dutch Hill

Real Renos

Real Renos

Web apps • dashboards • portals

Custom web applications that
actually run your business

We rebuild slow WordPress/Wix sites into audit-ready Next.js apps—tuned for performance, accessibility and real workflows. The same patterns behind our products power every client build.

Custom Business Web Apps

Internal tools, client portals, order flows and dashboards built around how your business actually runs.

Audit-Ready by Default

Performance, accessibility, SEO and best-practice checks baked in so you pass strict audits.

Next.js at the Core

Modern server-rendered stacks that load fast, rank well and stay maintainable as you scale.

Upgrade from WordPress & Wix

We replace plugin bloat with lean, measurable systems that don’t crumble under growth.

Why 4567 Labs

Senior execution, ops-first thinking

We build systems that reduce chaos, speed up staff, and stay maintainable as you grow.

Audit-Obsessed Delivery

Performance, accessibility, SEO and best-practice checks on every release—not a quick glance at a score.

Next.js & Modern Stack First

We live in Next.js, React and TypeScript so your app is fast, stable and future-proof.

We Build & Run Our Own SaaS

The same patterns behind our own products power client projects—battle-tested, not theoretical.

Ops-Driven UX

Less Dribbble. More speed-to-complete. Interfaces your staff actually enjoy using.

Small, Senior Team

You work with builders, not layers of account managers. Cleaner execution and faster iteration.

Our products

Real products we run every day

We build and operate our own SaaS. The same stack and patterns show up in client work.

Sendoff.ai logo

Sendoff.ai

Built for agencies and local businesses.

In production

An outreach engine that sends personalized SMS + email follow-ups so leads stop slipping through the cracks.

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ContentPress

AI-powered content, human-approved.

In production

Our content OS that generates, organizes and schedules blog posts, emails and social content from one place.

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Chatworth.io

Chatbots that feel like real staff.

In production

An AI chat + lead capture platform that sits on your site and turns visitors into real conversations.

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MyWebGuySucks.com

If your site sucks, it’ll tell you.

In production

A brutally honest website audit tool that turns technical reports into clear, prioritized action plans.

Stack, testing & security

Modern stack with audit-minded delivery

Strict typing, real performance tuning, and security hygiene baked in.

Technologies

  • Next.js & React App Router, server components and SSR/ISR patterns for speed and maintainability.
  • TypeScript Everywhere Strict typing from backend to frontend so changes are safer and bugs get caught earlier.
  • Modern Databases & Auth Postgres, Supabase, Prisma and secure auth flows that scale with your business.
  • Performance Tooling Lighthouse/PSI + practical tuning so pages load fast and stay fast as features grow.

Security

  • Encryption Securely transmit and store sensitive data by default.
  • Authentication Role-based access and modern auth flows to keep systems locked down.
  • Audits Dependency and security reviews so your app doesn’t quietly fall behind.
Integrations

Payments, CRMs & automation

We connect the systems you already use—without fragile “zap spaghetti.”

Payments & POS

Stripe, Square and custom checkout flows that sync orders, customers and revenue in real time.

CRMs & Marketing

HubSpot, Klaviyo, custom CRMs and marketing automations wired into your app.

Scheduling & Ops Tools

Calendars, booking tools and line-of-business APIs that keep operations in sync.

Our Partners

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Case studies

Proof you can click

Two builds that show the operational depth we obsess over.

Dutch Hill Farm — Holiday Ordering Platform
Ordering & Ops

Dutch Hill Farm — Holiday Ordering Platform

Self-manageable holiday forms, products, options and pickup days — with deposits via Square, prep-ready rollups, and guardrails that protect historical orders.

Meat Shop Transformation — Scale-to-Store Automation
Inventory Automation

Meat Shop Transformation — Scale-to-Store Automation

One-button scale flow that auto-generates barcodes, prints labels, publishes items online instantly — plus 1-click freezer batch updates with discounted pricing.

Ready to retire your WordPress or Wix site?

Let’s build a Next.js system that passes audits, runs faster than your old site, and actually makes day-to-day operations easier.