Daniel Nissan (born 1966) is an Israeli-American Internet entrepreneur who had a leading role in the development of VoIP, e-commerce and marketing automation.
Since 1993 Nissan has been a senior executive, co-founder and CEO with three companies: VocalTec, who patented the first Voice over IP audio transceiver and released the first VoiP software (1995), NetGrocer, the first online, nationwide ecommerce supermarket (1996), and StructuredWeb, the first marketing automation software for local and channel marketing (1999).
[4] During his time at VocalTec he helped develop and launch a line of IP based communication software for live voice, video, screen collaboration and online music distribution.
[5][6] In 1995, while working at VocalTec, he developed its e-commerce site that enabled online purchase of the Internet Phone.
and The New York Times,[citation needed] as well as the first affiliate marketing program with web sites, working alongside Jeff Pulver.