Meanwhile in Canada...
In Canada we merely search for StudioTax.
StudioTax is graciously offered at no cost to the taxpayer public by its generous creators.
It imports the previous year's fixed data, one then types in one's new T4 and other information slips, review the data, and then submit online to the Canada Revenue Agency by e-file.
If one was brave, the entire process might be done in 20 minutes. But careful triple-checking everything manually adds perhaps another hour.