What are some alternatives?
When comparing Marpipe and Piar.io, you can also consider the following products
Direktor - A/B testing as easy as short URLs
Pretty Links - The easy way to customize Facebook link previews
GoodUI Evidence - People's A/B test results that show which UI ideas work best
Survol - Preview any link you hover, save time and tabs.
Zarget - Zarget is new age AB testing and Heatmap software that lets you optimize your website with just a few clicks thereby increasing sales.
GlimpseLink - Customize your link previews for social media