Yes, both Spike and Flock offer a Free Trial.
Spike is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Flock is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Spike begins at $8/Month when Billed Yearly, while pricing details for Flock are unavailable.
Some top alternatives to Spike includes ClickUp, Zimbra Collaboration, mi.team, Convo, Chatter, Dialog, Closer, Teamwork Chat, StoryFile Conversa, Convin and Conversocial.
Some top alternatives to Flock includes CollaborateCloud, Zoho Connect, Zoho Cliq, ClickUp, Workplace, Zimbra Collaboration, mi.team, Fleekdrive, Chatter, Collabtools and Ideagen Huddle.