Domcomp - No-nonsense domain price comparisons, updated daily
Pricepeek - Compare prices of the same product across all Amazon locales
FindNiche - A free tool for AliExpress and Shopify. You can easily find niche products from your competitors, get latest insights of trending secrets and best-winning dropshipping products on Top Shopify stores and AliExpress drop shippers.
The Mac Index - Compare Apple product prices in different countries
Vizable - Turn your data into beautiful, interactive graphs on iOS.
dofo.com - Domain search platform Dofo.com gathers all registered (350 million) domains of the world in a single place. Dofo also brings together all the domain names that are on sale, provides useful features, all completely free.