Neither Zapier nor ChatOnce offers a free trial.
Zapier is designed for Large Enterprises, Medium Business and Small Business.
ChatOnce is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Zapier Starts at $19.99/Month when Billed Yearly whereas for ChatOnce Starts at $9/User/Month when Billed Yearly.
Some top alternatives to Zapier includes Pabbly Connect, Integrately, eZintegrations, Zoho Flow, ZapUp by 500apps, SaaS Integrator, Built.io Flow, Activepieces and ApiX-Drive.
Some top alternatives to ChatOnce includes Calendly, ChatFunnels, DaySchedule, TimeSync, ChatFlow247, Conferbot, Coffee Chats, Qualified, Workvivo, Conversy and IFTTT.