Build apps.
Ship fast.
Zero DevOps.
S4E turns your ideas into live Web Apps, APIs, and Chatbots — no servers, no config, no ops team required.
Works with the tools you already love
Everything you need.
Nothing you don't.
From first idea to production in minutes — S4E handles infrastructure so you focus on building.
Web App Builder
Visual full-stack builder with real-time preview, custom domains, and instant CDN deployment. No YAML, no Dockerfile.
drag-and-dropAPI Builder
Design REST or GraphQL APIs visually. Define schemas, auth rules, and rate limits — deploy serverless in one click.
auto-docsChatbot Builder
Train AI chatbots on your own data. Embed anywhere with a single script tag. Handles RAG, memory, and fallbacks.
RAG-poweredBuilt-in Auth
Email, magic link, OAuth, SSO — all wired up without writing a single auth line. Roles and permissions included.
zero-configManaged Database
Postgres or document store, auto-migrated, auto-backed up. Visual schema editor — no SQL required.
auto-backupAnalytics & Logs
Real-time request logs, performance metrics, error tracking, and user analytics. Everything in one dashboard.
real-timeCode less. Ship more.
Three powerful builders. One unified platform. All deployed on edge infrastructure with zero ops overhead.
Deploy a full-stack app in 4 minutes
Pick a template, connect your database, add components, and push live. S4E handles routing, SSR, CDN, and SSL automatically.
- 50+ production-ready templates
- Custom domain & SSL in 1 click
- Git-connected auto-deploy
- Edge-rendered with 99.98% uptime
Define APIs visually, deploy serverlessly
Draw your data model, define endpoints with a GUI, add middleware — S4E generates code and deploys edge functions globally.
- REST and GraphQL support
- Auto-generated Swagger docs
- Rate limiting and auth built-in
- Global edge deployment (23 regions)
Train and deploy AI chatbots with your data
Upload docs, PDFs, or URLs. S4E indexes, embeds, and deploys a smart chatbot widget you can embed in any site in minutes.
- RAG-powered knowledge base
- Embeddable widget + API access
- Human fallback routing
- Chat history & analytics
// s4e.config.ts
import { defineApp } from 's4e'
export default defineApp({
name: 'my-saas',
auth: { provider: 'magic-link' },
database: { engine: 'postgres' },
deploy: { region: 'auto' },
domain: 'app.mysite.com',
})
// $ your-app deploy
// ✓ Built in 2.3s
// ✓ Deployed to 12 edges
// ✓ Live: https://app.s4e.uk
Loved by builders worldwide.
From indie hackers to funded startups — people ship faster with S4E.
I launched a SaaS MVP in one weekend. No DevOps, no backend team — just me and S4E. Couldn't believe how fast it was.
The chatbot builder is insane. Trained it on our docs, embedded it in 10 minutes. Support tickets dropped 40% that week.
We cut our deployment pipeline from 3 days to 15 minutes. The API builder alone is worth every penny of the Pro plan.
Simple, honest pricing.
No credit card required to start. Scale up only when you need to.
Perfect for personal projects, prototypes, and learning the platform.
- ✓3 Active projects
- ✓1 Chatbot (1K msgs/mo)
- ✓Shared infrastructure
- ✓Community support
- –Custom domains
- –Team members
For serious builders and small teams shipping real products to real users.
- ✓Unlimited projects
- ✓5 Chatbots (50K msgs/mo)
- ✓Custom domains + SSL
- ✓Priority edge deployment
- ✓5 Team members
- ✓Email support (24h SLA)
For teams needing scale, compliance, SSO, and a dedicated SLA.
- ✓Everything in Pro
- ✓Unlimited chatbot messages
- ✓SSO / SAML
- ✓Dedicated infrastructure
- ✓Uptime SLA guarantee
- ✓Dedicated success manager
Start building today.
Join 12,000+ builders. No credit card required. First app deployed in under 5 minutes — guaranteed.