File your taxes on the go on any mobile device - use eFile Canadian Tax Return app.
I can only speak to the UK, but I have found FreeAgent to be an amazing tool for running a limited company in the UK.
I have managed to integrate all of my bank accounts, Barclays, wise, capital on tap and have payments only auto explain, that and their API enables me to feed in Stripe invoices automatically and have them marry up with payments. Making day to day accounting easy.
I log in once a week and everything is just there. Once a month I press submit payroll and I am basically done, no need to pay for an expensive payroll service.
TurboTax - TurboTax Premier includes everything in Deluxe, plus additional features to help you get the most from your investments and rental properties.
FreshBooks - The ideal accounting software for small business owners.
UFile - UFile - Canadian Tax Preparation Software online or on CD-Rom.
Xero - Xero is online accounting for your small business.
StudioTax - Canadian Personal Tax Preparation Software - Logiciel canadien de préparation de Déclarations de revenus pour les particuliers
QuickBooks - Business runs better with QuickBooks, the #1 accounting solution for small business.