Appium is a free open-source tool for automating mobile testing that will be showcased in a hands-on demo at Mobile+Web DevCon on February 3. The workshop will cover the basics of writing tests in JavaScript, including testing web applications in mobile environments and executing tests against a cloud of devices at Sauce Labs. Attendees can expect to learn about the value of automated testing, including increased reliability and performance tuning on different platforms. The workshop is free for those who have purchased a ticket to Mobile+Web DevCon, and attendees without tickets can apply for 15% off using a discount code.