Zylo - Zylo helps organizations optimize their SaaS investments by providing insights around Spend, Utilization, and User Feedback.
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Siftery Track - Effortlessly visualize & optimize your team's software spend
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
Cardlife - Track all your business subscriptions with Cardlife.
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.