Yes, both Butter.ai and HeyTaco! offer a Free Trial.
Butter.ai is designed for Large Enterprises, Medium Business and Small Business.
HeyTaco! is designed for Medium Business and Small Business.
Pricing for Butter.ai Starts at $4.99/User/Month whereas for HeyTaco! Starts at $3/User/Month.
Some top alternatives to Butter.ai includes DailyBot, Teamline, HeyTaco!, Geekbot, Botbot.AI, HuForce, GitterBot.io, Whatis and TeamSearch.
Some top alternatives to HeyTaco! includes HITEAM, Karmabot, Trivia, Geekbot, HelloTeam, TacoTranslate, HatQuest, Teemyco and HeyTeam.