Building reservation platforms, operational systems, and infrastructure that works in the real world.

Gluebox.com LLC is a Philadelphia-based technology studio. We build RSVP-System, an open-source Drupal recipe cookbook for reservation and event management, and develop custom enterprise systems that connect scheduling, people, and operational workflows. Our software is designed by deploying it into live environments and refining it under real conditions.

RSVP-System: Open-Source Reservation Platform

RSVP-System™ is our flagship Drupal-based platform for building reservation, booking, and event management systems. Built as a cookbook of composable recipes, it provides the technical foundation for restaurants, social communities, venues, and service businesses that need more than generic booking and event widgets. We love to make calendars that work!

What makes RSVP-System different:

• Open source and extensible - Available on GitLab and Packagist, built on Drupal 11
• Conversational AI integration - Natural language reservation intake with human moderation workflows
• Real-world tested - Designed for actual operational environments, not ideal assumptions
• Developer-friendly - Multi-repo architecture, version-controlled, infrastructure-as-code approach
• Modern stack - Single Directory Components, Tailwind CSS, Smart Date, FullCalendar integration

RSVP-System is more than software - it's a methodology for building reservation systems that adapt to how your business actually operates.