| Application framework | Sinatra |
| Web server | Puma |
| Database | SQLite |
| QR Code image generation | RQRCode |
| Password encryption | bcrypt-ruby |
| Application protection | rack-attack |
| Bot protection | ipcat-ruby |
| Application hosting | Fly.io |
| URL risk assessment | Google Web Risk |
| TLS | Let's Encrypt |
| twilio sendgrid | |
| Charts | QuickChart |
| Analytics | GoatCounter |
| CSS framework | Neat CSS |
| Illustrations | Storyset |