Nine. is a desktop application for real estate investors, property managers, and landlords managing up to nine residential rental properties.
Built with ASP.NET Core 10 and Blazor Server, wrapped in Electron for a native desktop experience.
Perfect for:
- Independent property managers and landlords
- Property owners who self-manage their rentals
- New Real Estate investors building their portfolio
- Anyone seeking focused, no-subscription, property management software
- 📋 Manage up to 9 residential properties
- 🏡 Property profiles with photos and documents
- 🔍 Track property status (Available, Occupied, Under Renovation)
- 📊 Portfolio overview and analytics
- Track tenants and leases
- 📄 Digital lease creation and management
- 💰 Security deposit tracking
- 🧾 Generate invoices for active leases
- 💳 Payment tracking by multiple methods
- ⏰ Automatic late fee application after grace period
- 📈 Financial reports and payment history
- 🔧 Capture repair services and costs
- ✅ Comprehensive 26-item inspection checklist
- 📅 Scheduled routine inspections
- 📄 PDF inspection reports
- 🔔 In-app notifications
- ⏰ Automatic late fees and lease expiration warnings
- 📅 Background tasks for scheduling and cleanup
- 🎯 Configurable notification preferences
- 💾 SQLite file-based database (no server required)
- 🔒 Database encryption at rest (SQLCipher AES-256)
- 🔑 OS keychain integration for password management
- 🔄 Automatic schema migrations
- 📦 Manual and scheduled backups
- ♻️ Staged restore with preview
- 🔐 Content Security Policy (CSP) headers
Latest Release: v1.0.0
All Downloads: View v1.0.0 Release
# Download from releases page or use wget
wget http://github.com/xnodeoncode/nine/releases/download/v1.0.0/Nine-1.0.0-x86_64.AppImage
# Make executable
chmod +x Nine-1.0.0-x86_64.AppImage
# Option 1: Desktop integration (recommended)
wget http://github.com/xnodeoncode/nine/releases/download/v1.0.0/install-desktop-integration.sh
chmod +x install-desktop-integration.sh
./install-desktop-integration.sh Nine-1.0.0-x86_64.AppImage
# Option 2: Run directly
./Nine-1.0.0-x86_64.AppImageOption A: Installer (Recommended)
- Download
Nine-1.0.0-x64-Setup.exefrom the releases page - Run installer and follow the setup wizard
- Launch from Start Menu or Desktop shortcut
Option B: Portable Executable
- Download
Nine-1.0.0-x64-Portable.exefrom the releases page - Move to permanent location (e.g.,
C:\Program Files\Nine\)⚠️ Database and settings are stored relative to the .exe location
- Double-click to run
Note: Windows SmartScreen warning may appear (app is unsigned). Click "More info" → "Run anyway".
- Setup Wizard guides you through initial configuration
- Create your organization (business name and contact info)
- Register your first user account
- Start managing properties!
New to Nine? Follow the Quick Start Guide for a 15-minute walkthrough.
| Minimum | Recommended | |
|---|---|---|
| OS | Linux (Ubuntu 20.04+) or Windows 10/11 64-bit | Same |
| CPU | 2-core, 1.5 GHz | 4-core, 2.5 GHz |
| RAM | 2 GB | 4 GB |
| Disk | 500 MB | 1 GB |
| Display | 1280x800 | 1920x1080 |
Nine is distributed as an AppImage on Linux (runs on all major distros — no installation required) and a self-contained .exe on Windows. All dependencies are bundled.
Optional: SendGrid (email) and Twilio (SMS) accounts for notifications.
- 🚀 Quick Start Guide — Get up and running in 15 minutes
- 💾 Database Management Guide — Backup, restore, troubleshooting
- 📊 Compatibility Matrix — Version compatibility and upgrade paths
- 📝 Copilot Instructions — Architecture and development guidelines
- 🔄 CHANGELOG — Version history
Nine. is intentionally constrained for an optimal user experience:
| Items | Limit | Reason |
|---|---|---|
| Properties | Maximum 9 | Focused workflows — it's our identity |
| Users | Maximum 3 (1 system + 2 login) | Simplified access control |
| Organizations | 1 | Desktop application scope |
| File uploads | 10 MB per file | Performance management |
- Framework: ASP.NET Core 10.0 + Blazor Server
- Desktop: ElectronNET 23.6.2
- Database: SQLite with SQLCipher AES-256 encryption
- PDF Generation: QuestPDF (Community License)
- UI: Bootstrap 5.3, Material Design Icons
Nine/
├── 0-Nine.Core/ # Domain entities and interfaces
├── 1-Nine.Infrastructure/ # Data access and external services
├── 2-Nine.Application/ # Business logic and services
├── 3-Nine.Shared.UI/ # Shared Blazor components
├── 4-Nine/ # Desktop application (Electron host)
└── 6-Tests/ # Unit and integration tests
dotnet test Nine.sln- Fork the repository
- Create a feature branch from
development:git checkout -b feature/your-feature - Read copilot-instructions.md for architecture guidelines
- Make changes, write tests, ensure build passes
- Submit a pull request to
development
Branch strategy:
main (protected, production-ready)
↑ Pull Request
development (integration testing)
↑ Direct merge
feature/your-feature
Build and run:
dotnet build Nine.sln
cd 4-Nine && dotnet watch- MAJOR = breaking/schema changes
- MINOR = new features
- PATCH = bug fixes
Current version: 1.0.0 · Database schema: 1.0.0
- ✅ Complete property, tenant, and lease management
- ✅ Automated invoicing and payment tracking
- ✅ Maintenance request tracking with vendor management
- ✅ Comprehensive 26-item inspections with PDF reports
- ✅ Security deposit investment tracking with dividends
- ✅ Multi-user support with role-based access control
- ✅ Database encryption at rest (SQLCipher AES-256)
- ✅ Linux AppImage + Windows installer
- 🎯 Windows/macOS keychain integration
- 🎯 Rate limiting and antiforgery tokens
- 🎯 Code signing for Windows
- 🎯 Calendar refactoring
Copyright © 2026 CIS Guru. Licensed under the MIT License — see LICENSE for details.
- 🌐 Website: nineapp.co
- 🐛 Bug Reports: GitHub Issues
- 💡 Feature Requests: GitHub Discussions
- 🔒 Security Issues: cisguru@outlook.com (private)
Start with Nine. 🏠
