Pritunl is a production-grade, distributed VPN server management system that provides a web-based admin interface for configuring and monitoring OpenVPN and WireGuard instances. The Python backend (Flask with MongoDB) handles authentication, organization/user management, certificate generation, IP pool allocation, bandwidth monitoring, and enterprise features like site-to-site network links and SSO (SAML, OAuth, LDAP). It runs as a daemon with multiple background runners for task queues, event processing, and firewall rule management. The legacy frontend uses Backbone.js with a newer Dart/AngularDart component set in transition. The architecture is monolithic but modular, with well-defined subsystems for settings, caching, transactions, and plugins. External dependencies include MongoDB, Redis, InfluxDB, OpenVPN, WireGuard, and various cloud provider APIs. The codebase demonstrates strong engineering practices with clean abstractions (MongoObject ORM, event system, queue system, plugin system) but shows some technical drift in the frontend stack and vendored libraries.