Yes, both Heymarket and Zipwhip offer a Free Trial.
Heymarket is designed for Large Enterprises, Medium Business and Small Business.
Zipwhip is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Heymarket Starts at $29/Month when Billed Yearly whereas for Zipwhip Starts at $35/Month.
Some top alternatives to Heymarket includes Zoho Campaigns, SMS Gateway Hub, Sendchamp, Zipwhip, SendHub, SMS.to, SupportChamp and SMS-iT.
Some top alternatives to Zipwhip includes CometChat, Podium, MOBtexting, SimpleTexting, Twilio Flex, SMS.to, TextMagic, Buddy Texts, Cloudli TalkNText and CloudContactAI.