Yes, both TwentyThree and Adobe Connect offer a Free Trial.
TwentyThree is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Adobe Connect is designed for Large Enterprises, Medium Business and Small Business.
Pricing for TwentyThree Starts at $1,499/Month whereas for Adobe Connect Starts at $50/Month.
Some top alternatives to TwentyThree includes Adobe Connect, GoToWebinar, EasyWebinar, LiveWebinar, ezTalks Webinar, Zoom Video Webinar, WebinarNinja, PowWowNow Webinar, WebinarJam and eWebinar.
Some top alternatives to Adobe Connect includes Cisco Webex Meetings, BigBlueButton, Zoho Meeting, ON24, GoToWebinar, EasyWebinar, LiveWebinar, ezTalks Webinar, Zoom Video Webinar and Cisco Webex Webinars (formerly Webex Events).