Looking For an Open House in Toronto? Check out Realtor.ca (the public version of MLS) and do a search of open houses there.
If you are looking for a home in a particular area, send an email to AskStevenSilva@gmail.com . I will be happy to reply with all the open houses in that area (regardless of which brokerage is representing the home[s]).
As much as every Realtor wants you to search using their own website to look for homes, Realtor.ca is the best and most complete option for homes listed with Realtors. Every other web site is just a sub-set of what is available in the Toronto Real Estate Board. Don’t waste your time, go straight to the source