BetOnline and Bookmaker are among the more reputable offshore sportsbooks because both have long operating histories, but they are still not U.S.-regulated sportsbooks. BetOnline has operated since 2001, while Bookmaker traces its roots to 1985 through the BetCRIS group.
That longevity matters because offshore reputation is usually based on track record, betting limits, market depth, and payout history not oversight from a U.S. state gaming board. BetOnline is often associated with broad U.S. sports coverage, crypto payments, and NFL betting markets. Bookmaker is known for high limits, early lines, and a long-standing focus on North American sports.
The important distinction: reputable offshore does not mean legally regulated in the U.S. Even established sites like BetOnline and Bookmaker lack the same consumer protections, fund safeguards, and dispute-resolution systems required of licensed apps such as DraftKings, FanDuel, or BetMGM.