Live demo
Open source · MIT

Event rental software you can own and self‑host.

Inventory, project quoting, live availability checks, pull sheets, customer e-signatures and an SEO-friendly public catalog — in one full-stack app, with an optional AI copilot that can read and draft but never act on its own.

▶ Open the live demo★ View on GitHub
MIT License Release Last commit Stars React Vite Express SQLite Rust Docker
Demo admin — pre-filled on the login page
Email admin@sunset-demo.test · Password DemoAdmin!2026
Fictional company, in-browser data. No server, nothing stored.
100k+lines of code
85automated test files
13tagged releases
3runtimes: Node, Rust, Chrome MV3

What it does

Built around the real workflow of a rental company, from first inquiry to pull sheet. The demo lets you try each of these.

▦

Inventory & availability

Searchable catalog with categories, stock, set-asides and per-day availability. Overbooked items surface as conflicts before you promise them.

▤

Quotes & pricing

Line items, discounts, tax, custom items and contract text — with signed-versus-unsigned change tracking that forces re-approval.

✍

Client portal & signing

Shareable public quote page with approve-and-sign, live quote-linked messaging and audit-oriented signing artifacts.

☑

Pull sheets

Warehouse picking lists grouped by category, with aggregate pulls and QR/serial tracking for fulfillment.

🌐

Public SEO catalog

Canonical URLs, JSON-LD product markup, robots and sitemap generation so your inventory ranks.

✦

CINDY copilot

Permission-aware, read/draft-only assistant across the app. Supports OpenAI, Anthropic, Gemini or managed local Ollama — AI is never a hard dependency.

Try it in the demo →

Architecture

A single deployable: SPA, API and SQLite, with optional Rust and AI services behind feature flags.

  Browser (React + Vite SPA)  ◄─────►  Public quote & catalog pages (SEO)
        │  REST / SSE
        ▼
  Express API ── permissions · quotes · inventory · files · messaging · admin
        │            │                  │
        ▼            ▼                  ▼
  SQLite (sql.js)   Rust availability   Optional AI: OpenAI · Anthropic · Gemini · Ollama
  + safe migrations engine (guarded)    (CINDY copilot, read/draft only)
        ▲
  Chrome MV3 extension  ·  Google Sheets import  ·  SMTP / IMAP  ·  Docker / Windows EXE

Engineering highlights

Choices that go beyond the feature list.

Safe schema evolution

Startup migrations keep a live database upgradeable, with backup and a DB guardian service plus worker heartbeats and incident reflection.

Permissions by module

Role-aware navigation and per-module read/write permissions, including a dedicated check for AI copilot access.

Domain correctness

Shared totals logic, oversold detection across overlapping events, signed-quote change control and a guarded Rust parity path for the availability engine.

Documented & audited

Architecture and API docs, a security audit, release notes per version, structured handoffs and an extensive test suite.

Tech stack

ReactViteExpresssql.js / SQLiteRustChrome MV3DockerBun / Node 20MapboxNodemailer / IMAPFlowSharpJSON-LD / SEO

Run it yourself

Docker is the quickest path; Bun or Node 20 works for development.

  1. Clone and install
    git clone https://github.com/248Tech/rentalos.git
cd rentalos
npm run install:all
  2. Configure — copy .env.example to .env and set APP_URL (and optional AI / Mapbox keys).
  3. Start
    npm run dev            # API :3001, client :5173
# or
docker compose up -d --build

Full README · Changelog · Security audit