Ontario Genealogical Society
The Ontario Genealogical Society is a non-profit organization formed to help promote genealogical research. Check their web site for the latest information regarding any special projects.

OGS Provincial Index
Major features include marriage links across generations and synchronized census files 1851-1861-1871-1881-1891-1901 for single click hops within a family.

The Ontario Genealogical Society has 28 branches throughout Ontario. These are the web sites for some of those branches:

Bruce & Grey
Brant County
Elgin County
Essex County
Halton-Peel
Hamilton
Kent County
Kingston
Lambton County
Leeds & Grenville
London-Middlesex County
Niagara Peninsula
Nipissing & District
Norfolk County
Ottawa
Oxford County
Perth County
Quinte
Sault Ste. Marie
Simcoe County
Sudbury District
Toronto
Waterloo
Wellington
York Region