Yes, both Twilio Flex and Redfeets offer a Free Trial.
Twilio Flex is designed for Large Enterprises and Medium Business.
Redfeets is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Twilio Flex Starts at $1/User whereas for Redfeets Starts at $10/Month.
Some top alternatives to Twilio Flex includes CometChat, CloudTalk, Five9, 3CX, Genesys PureConnect, MSG91, Infobip, Cloudonix, CommPeak, CloudContactAI and Messenger Communication Platform.
Some top alternatives to Redfeets includes Crowdfire, SocialBee, Zoho Social, Planable, SocialMgr, Later, SocialBu, SocialChimp, Broadcast, Ultimate SMM, CloudSocial, SocialHub, Send Social Media, Sociality.io and SendPilot.