I've been using https://www.timesolv.com https://www.timesolv.com for 15 years for my IT invoices. I pay annually for a discount. It is marketed as legal billin

I've been using https://www.timesolv.com https://www.timesolv.com for 15 years for my IT invoices. I pay annually for a discount. It is marketed as legal billing but I had no problem adapting it for to my needs. Changing some of the default invoice billing terms, etc it can pretty much be adapted to any industry.