Axure provides the most in depth feature set for any prototyping tool that I have ever used as an UX designer. You can use real data, store values and use real scripting language to make your prototype impressively high fidelity. I once needed to create a prototype that enabled me to control a smart lightning bulb in real time and Axure made me able to do this using webhooks, impressive stuff!

If you can dream it you can build it in Axure. This is a robust tool that allows for the creation of high fidelity prototypes that are great for the final stages of usability testing.

You can design beyond just pages as it allows you to do much more in terms of interactions and code than other wireframing software out there.