SPICEWORKS
Normally $199 USD (1 year). Not the cheapest it's been. It might be worthwhile waiting for Sysadmin day (July 31) where it could be priced at 50% off, again. The USD/AUD FX rate hurts a bit, but I use this software daily for my work and it's paid for itself many, many times.
Remote Desktop Manager (RDM) centralizes all remote connections on a single platform that is securely shared between users and across the entire team. With support for hundreds of integrated technologies — including multiple protocols and VPNs — along with built-in enterprise-grade password management tools, global and granular-level access controls, and robust mobile apps to complement desktop clients for Windows and Mac, RDM is a Swiss Army knife for remote access. RDM empowers IT departments to drive security, speed and productivity throughout the organization, while reducing inefficiency, cost and risk.
Great tool, definitely worth the money if you have more than a few of machines/devices to manage.
Though the price seems to be creeping up - when I've got my initial license a few years ago, full price was USD $150.
Worth noting that annual renewals are 50% of the current full price (so ~ USD $100 now).