OneUp allows you to schedule and automate posts on Facebook, Instagram, Twitter, Pinterest, LinkedIn, and Google My Business.
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.
Buffer - Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.
FreshBooks - The ideal accounting software for small business owners.
HootSuite - Enhance your social media management with Hootsuite, the leading social media dashboard. Manage multiple networks and profiles and measure your campaign results.
Xero - Xero is online accounting for your small business.
Amplifr - Amplifr is a social media publication and analytics app that analyses conversion and revenue for each of your social media updates.
QuickBooks - Business runs better with QuickBooks, the #1 accounting solution for small business.