Yes, both Ek Link and Refersion offer a Free Trial.
Ek Link is designed for Medium Business and Small Business.
Refersion is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Ek Link Starts at $5/Month whereas for Refersion Starts at $89/Month.
Some top alternatives to Ek Link includes TrackingDesk, Everflow, RedTrack.io, Refersion, Affiliatise, OffersHub, Offer18, Affiliatics and Trackdesk.
Some top alternatives to Refersion includes AffTrack, Post Affiliate Pro, ClickInc, TrackingDesk, Affiliatise, OffersHub, Promocate, Affiliatics, ReferralCandy and Sir Filiate.