Realtor.ca (previously mls.ca) is a public website for advertising operated by Canadian Real Estate Association (CREA) and accessible to the general public, which displays listing content coming from all MLS systems across Canada and hence give realtors greater listing exposure.
Collab is an incredible tool for clients to perform their own Advanced searches on MLS. It allows you to search in REAL TIME on mobile devices and be notified INSTANTLY as properties hit the market/MLS!
You can favourite listings, build lists, set up custom searches and so on. Collab offers much more functionality than searching on Realtor.ca.