Internetvista availability check is a website uptime checker that also tests your website response time and average speed from ten locations.
Website Uptime Checker by Regery
Website Uptime Checker by Regery is a quick availability tester that helps you check your website uptime from multiple locations with checkpoints that are located on all continents.
Website Availability Test by Uptimia
Uptimia' Website Availability Test is an online tool to check your website availability from 30 different checkpoints on 6 continents. Plus, it also checks page loading time from those different locations.
Website Availability Check by site24x7
This service by site24x7 tests your website's availability and performance from 60+ locations worldwide and make sure your visitors can access it.