Contractors offer various services starting from business consulting, designing, and manufacturing services. And for that, billing is an essential skill for a contractor to create invoices & get paid for such activities.

I recommend Invoicera as the best contractor estimate and invoice software. It can automate your entire billing process with its custom billing software, from calculating charges to securing payments and generating reports.

Features:
>Estimate management
>Manage finance
>Receive payments online
>Business forecasting and decision making
>Quick, easy, and secure
>Manage multiple clients
>Staff management
>Manage Inventory
>Expense management
For More Information! Check its free demo version!

It would also be nice to find something free, or at least with a free trial option, because I've already come across a lot of software that didn't work for me, but I had to pay for it.

I also managed to try many different software for contractors, but in each of them I always found something that did not suit me for various reasons. I'm currently working with Field Complete, you can see the details at this link https://fieldcomplete.com/industries/roofing-contractor-software. I like this software, there is a demo version, and it also works on all devices.