Alan Marshall Meckler (born 1945) is an American internet pioneer and publishing executive.[1] Meckler started his own publishing business in 1971 which evolved into Mecklermedia Corporation in the 1990s until the company was acquired by Penton Media in November 1998,[2] and founded several print magazines including Virtual Reality World, CD-ROM World, and Internet World.[3][4] Mediabistro was purchased in 2007 and later sold to Prometheus Global Media in 2014.[5] Currently Meckler is CEO of 3DR Holdings LLC based in New York City which offers news coverage of the additive manufacturing fields and quantum computing through websites and trade shows.[6]