Nesto, Dominion Lending Centres, The Mortgage Centre, First National Financial LP, and THINK Financial are Canadian mortgage refinancing services, offering competitive fixed rates, varied loan options, and prompt closing. Each lender has unique strengths, with some focusing on online applications and customer satisfaction, while others offer personalized services. Factors such as prepayment privileges, penalty calculation types, and eligibility should be considered when choosing a lender. Fixed-rate mortgages offer stability and protection against rate increases.