We independently review every app we recommend in our best apps lists. When you click some of the links on this page, we may earn a commission. Learn more. With new problems popping up every day, you need robust solutions to keep them all under control. Even if you have an IT team to build internal tools for you, their backlog is probably full of higher-priority tasks. For businesses that can't wait to move forward, internal tool builders can help you develop custom apps for every problem—i...