Any applications, websites, services to make my business easier?

Any applications, websites, services to make my business easier or a little more "automated." except for Loyverse POS :) I'm very soon done with a website builder, and I'd like to know what kind of services I can use to make my life easier when it comes to managing a business alone. I already have some simple apps for making invoices and collecting all invoices in one place. I just found "Crisp," which allows me to have live chat on my website with Facebook-styled messages. Which is nice. I also found Kraken.io to help me easily compress a bunch of pictures. I'm just looking for the simple stuff that can help me in whatever. If it's design, business, invoices, webdev...

For me, Google.com is very useful. You have a bunch of useful features from Google inevitable for website promotion. Such as Search Console and Analytics. They give you a lot of information of your website visitors, of the website situation and position in search engine queries.