Build the right
thing, fast.

AI can build quickly. Catalyst helps you build the right thing.

The AI-first delivery system that helps teams prove value and stay aligned.

View ExamplesExamples

Prove value in days

Launch with confidence

Prove value in days

Reduce drift and rebuilds

Launch with confidence

Why Catalyst

Speed isn't the problem – drift is.

Without alignment, it's easy for AI to build in the wrong direction.

Stakeholders see it too late

Weeks of work already pointing the wrong way.

“The CEO sees it for the first time… and wants a different direction.”

Decisions don't stick

You end up with re-work instead of new work.

“"Didn't we already decide this?" — every second review.”

Prototypes become production

A testing demo starts serving real users.

“The demo is live. It's handling real users. Nobody planned for that.”

Catalyst bridges the gap between speed and clarity –so a fast start doesn't become a hard finish.

What You Get

A method and a kit – working together

A complete system for shipping production-ready software at the speed of AI.

The Method

How you run the project

A repeatable rhythm that keeps AI builds aligned and stakeholders in the loop.

Delivery Cycle: Brief → Build → Review → Refine

Clear Stages: POC → MVP → MMP → PROD

Brief what matters. Build working proof. Review with real users. Refine or advance. Clear stages from POC through to production — so you always know where you are and what's next.

The Kit

What you build with

Surfaces, components, and conventions AI can follow out of the box.

Multiple Surfaces: Web, App, Presentations + more

AI-Ready Structure (.md files, docs, and instructions)

Multiple surfaces ready to ship — websites, apps, docs, presentations. Design system and component library included. Structure that AI can navigate and extend without breaking things.

Rapid Development

POC in days. Launch-ready in a week.

Multiple surfaces, component library, and deployment patterns. Start from best practice, not blank files.

AI-Ready Codebase

AI generates code that actually fits.

A predictable structure AI can navigate. Next.js, Tailwind, shadcn – a stack AI knows.

Production Pathway

POC to production without rewrites.

Clear stages with explicit promotion. The code you write today is the code you ship.

Design System Included

Consistent UI out of the box.

Tokens, typography, spacing, and dark mode – all configured. Every page looks like it belongs.

Drift Prevention

Intent that survives the whole project.

Vision, Architecture, and Voice documents capture the 'why'. Still clear three months in.

Battle-Tested Patterns

15 years of experience baked in.

Real production patterns from hundreds of shipped projects. Common mistakes already avoided.

What you avoid

"Endless rework"

Less debate, less rework

"Vibe spaghetti"

Clear intent, faster builds

"Hitting a wall"

Clear path to production

The Catalyst Advantage

Why Teams Choose Catalyst

Speed without structure creates invisible risk. Catalyst removes the hidden costs of fast AI development.

Full Stack Toolkit

Everything You Need to Ship

Most starter kits help you begin – very few help you finish. Catalyst was designed with everyting teams need to move fast, without creating future clean-up work.

Built to work with AI agents, not around them.

Marketing Site

Launch-ready. Add your story.

Dashboard App

Auth and settings wired.

Documentation

Self-service. Less support.

Room to Grow

Presentations, admin, and more.

Ship in Hours, Not Weeks

Skip the boilerplate. POC before lunch.

Because good decisions compound progress.

Battle-Tested Code

Projects that hold up when real users arrive.

Production-tested patterns

Proven on enterprise projects

Built by Practitioners

15+ years of enterprise delivery experience.

Production Patterns

Complete reference implementations ready to adapt. AI can use what you need, and remove what you don't.

User LoginApps & WebsitesDesign SystemComplex FormsRich NavigationDark ModeDocumentationMobile Ready+ more

Enterprise Quality

Built the way large teams build software. Clean structure, consistent patterns, and code that scales.

interface User {

name: string;

role: Role;

}

Built by Practitioners

Developed through real client delivery by RIVER Group, following 15+ years delivering high‑impact digital solutions.

15+ years digital innovation

500+ delivered projects

Enterprise-grade patterns

Powered by Giants

Industry leading and AI-ready, so you can scale from prototype to production.

Next.js 16

Your app loads instantly and handles traffic spikes without breaking a sweat.

React 19

The interface stays smooth and responsive, even during complex operations.

shadcn+tailwind

Beautiful, accessible components you fully own. Customize anything, no vendor lock-in.

TypeScript

Bugs get caught before users see them. Your AI assistant reads your code perfectly.

AI-Native Workflow

AI That Knows Your Project

The included AGENTS.md file gives Claude, Cursor, and Copilot instant context about coding architecture. The included /specs give them context about your project vision and requirements.

AGENTS.md gives AI context about your project.

Context-Aware Coding

AI knows your project structure and vision.

Consistent Output

AI follows production-ready code conventions.

# AGENTS.md

## Project Overview

A method + kit for shipping the right thing, fast|

## Read First

- Scan /specs before writing new code

- Prefer existing components and patterns

- Ask when intent is unclear

## Optimise For

1. Clarity

2. Consistency

3. Speed

Built for Delivery

Catalyst is for people who need to deliver real outcomes, not just demos.

Move fast without breaking governance

You're accountable for outcomes, timelines, and quality. Catalyst gives you AI velocity with enterprise-grade artefacts—vision docs, decision logs, and handover-ready code.

Move fast without breaking governance

You're accountable for outcomes, timelines, and quality. Catalyst gives you AI velocity with enterprise-grade artefacts—vision docs, decision logs, and handover-ready code.

How it Works

From idea to proof to production – without losing alignment.

You don't ship and hope it's right. You ship proof, review it together, and refine before you've overcommitted.

Brief

Define the problem worth solving and what success looks like for this cycle.

Build

AI generates a working proof – real UI, real flows, not diagrams.

Review

Stakeholders react to something tangible, early and in context.

Refine

Decisions are captured, direction is locked, and the next cycle is clear.

Runs in days, not months

Production Ready

Where to Start

Some teams need to proof fast, others need clarity first. Catalyst supports both.

Proof-First

"I need to move now"

Start building immediately. Let the proof surface questions. Capture decisions as you make them.

Best for: Tight deadlines, exploration, validating assumptions

Build for proof:

1
Clone the kit
2
Pick a surface (web/app/deck)
3
Build the proof
4
Capture feedback
5
Refine and iterate

Intent-First

"I need clarity first"

Start with a brief. Align stakeholders on vision and constraints before writing code.

Best for: Stakeholder buy-in, complex projects, team alignment

Build for clarity:

1
Define the brief
2
Clarify success
3
Create Vision + Architecture
4
Build the prototype
5
Review and iterate

Choose Your Path

Ready to ship?

Open source and free to start. Scale with Pro when you need more.

Private Access

Catalyst is currently in private beta.Contact RIVER Group for early access →

Community

Free

forever

Get Free

Everything you need to start building. Open source, MIT licensed.

Core kit, surfaces, docs, AGENTS.md + design system

Core kit + surfaces

Full documentation

AGENTS.md for AI coding

Delivery method + prompts

Design system included

Get Started Free

Built by RIVER Group

Don't want to DIY? We'll build your Catalyst app with you. Same methodology, same kit, but with a dedicated delivery lead from the team that built it.

Dedicated Lead

Your own delivery expert

Stakeholder Work

We handle the alignment

Production Support

Hardened and shipped

From

$1,999

setup

Catalyst

Ship production-ready software in weeks, not months. Built by RIVER Group.

Get Started

Documentation Examples GitHub

Pro Edition

Features Pricing FAQ

Work With Us

Managed Service Contact RIVER

Build the rightthing, fast.

Speed isn't the problem – drift is.

Stakeholders see it too late

Decisions don't stick

Prototypes become production

A method and a kit – working together

The Method

The Kit

What you avoid

Why Teams Choose Catalyst

Everything You Need to Ship

Ship in Hours, Not Weeks

Battle-Tested Code

Built by Practitioners

Production Patterns

Enterprise Quality

Built by Practitioners

Powered by Giants

AI That Knows Your Project

Built for Delivery

Move fast without breaking governance

Move fast without breaking governance

How it Works

Where to Start

Proof-First

Intent-First

Ready to ship?

Built by RIVER Group

Build the right
thing, fast.