ProductTank istanbul | 455 followers on LinkedIn. ProductTank was founded in 2010 in London and today spans over 75 cities with over 35,000 members. It is an informal meetup that brings together the local product community in each of those cities – whether they’re Product Managers, Designers, or Developers – to share their experience and knowledge. ProductTanks are always free to attend, organized by volunteers from the local product community, and supported by our generous sponsors.