His first credit was as associate producer of the 1967 Matt Helm (Dean Martin) comedy The Ambushers, about a government-built flying saucer.
In December 1967, it was reported that Netter was developing the property The Crime Against Marcella for Jalem Productions, a film which was not to star Lemmon (like Cool Hand Luke, also produced by Lemmon) with financing and distribution through Cinema Center Films.
The next year he began a period when he concentrated on the Western genre, producing The Sacketts, a TV miniseries based on Louis L'Amour's Sackett family and serving as executive producer of the NBC TV movie Buffalo Soldiers.
Between the third and fourth seasons of Babylon 5, he founded and appointed himself CEO of Netter Digital, a CGI special effects company.
[4] His grandson Jason Netter was an associate editor on Babylon 5 and has gone on to produce a number of shows, including Preacher (2016-2019) for AMC and The Boys for Amazon Prime.