Yes, both HeadlessTesting and ScreenshotOne offer a Free Trial.
HeadlessTesting is designed for Large Enterprises, Medium Business and Small Business.
ScreenshotOne is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for HeadlessTesting Starts at $40/Month when Billed Yearly whereas for ScreenshotOne Starts at $12/Month when Billed Yearly.
Some top alternatives to HeadlessTesting includes BrowserStack, LambdaTest, Anwendo, Endtest, CloudQA, TestRobotic, Cypress.io, Firelab, BugBug and Browserlify.
Some top alternatives to ScreenshotOne includes Capture, ScreenshotsCloud, GetScreenshot, Screenshot Machine, ScreenshotAPI, Screendot, Qualified, TakeAscreen, TinySnap, Workvivo and IFTTT.