Silvertech Ventures is an accelerator that provides investment and advising and also helps their portfolio companies gain access to customers, financing and talent. in collaboration with Silverstein Properties. SilverTech also offers business advice, access to its network of entrepreneurs and investors and roundtables with key people in technology. It offers up free space on the 10th floor of the esteemed 7 World Trade Center, the first building to open post-9/11. The floor can fit 30 people comfortably (about 10 to 15 startups). It's not the real estate developer's first time working with startups. Two years ago, Silverstein Properies opened up the 46th floor of 7 World Trade Center to young companies.