There are literally hundreds of resume builder tools online. Each has their pros and cons. Be wary of the services who claim they are free but have upgrade services playing out in the background to get you to release your document. For that reason, we recommend the following websites that do a fantastic job at providing great content and service at the free level.
Free and links to LinkedIn so it can import what you already created. It also has a a great user interface.
No signup required and plenty of editing available.
Free with upscale resume design features and saves to
Here are some articles that can help guide your thought process and modernize both the content and the look of an existing resume.