WhereCanWeGo.com - launched by computer specialist John South and marketer Kimble Earl - has listings for events such as festivals, shows, sporting fixtures and exhibitions.
Visitors enter their postcode, select the type of event they want and the results appear in order of closest location. It is free for organisers to enter their details and there are further search facilities under area, interest and date.
Earl explained: "It's been so popular in the Reading, Oxford and Basingstoke area where it launched that we're now going nationwide.
"Event organisers are invited to enter details of anything open to the general public - it costs nothing to enter basic information."