Yes, both Desku and MessageDesk offer a Free Trial.
Desku is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
MessageDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Desku Starts at $19/User/Month when Billed Yearly whereas for MessageDesk Starts at $29/Month when Billed Yearly.
Some top alternatives to Desku includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, MessageDesk, Freshdesk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, eStreamDesk, UseDesk, HelpdeskEddy, Desk360, BoldDesk and Alerty.
Some top alternatives to MessageDesk includes Zoho Campaigns, SlickText, ExpertTexting, TextToHire, Senderium, MOBtexting, SimpleTexting, SendHub, Buddy Texts and Dash Notify.