Zack Bumm – Agentur für Veranstaltungen

Open Source Festival

With 5,000 visitors annually, the festival has been an integral part of the Dusseldorf cultural landscape for a decade. As festival producer, ZackBumm keeps the “open source” spirit flowing all festival long.


  • Event Design
  • Gastronomic Concept
  • Calculation
  • Documentation


  • Project Coordination and Management
  • Authorisation Process
  • Technical Direction
  • Shuttle Management
  • Gastronomic Management
  • Artist Management
  • Guest Management
  • VIP Service
  • Ticketing
  • Cash Flow Management
  • Human Resource Management


  • Media Planning
  • Public Relations
  • Graphics / Editorial / Printing
  • Advertising Materials
  • Programme Materials


  • since 2006


  • Open Source Festival GmbH

Further Projects – Cultural Events

Voices of Fashion

The Voices of Fashion: an umbrella concept for the fashion hub Düsseldorf – with local and international accents.

Open Source Festival

No other festival juggles so expertly with niche, novelty and well-known names. The magic formula? A mixture of music and art.

Approximation Festival

Crossing boundaries is par for the course at this piano festival, which delights the public for six days at various locations.

Holi Festival of Colours

When 10,000 people get their groove on in a frenzy of colour, it can only mean one thing: the Holi Festival of Colours is in town.