Yes, both Slack and Funnelll offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Funnelll is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Funnelll Starts at $24.99/Month.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.
Some top alternatives to Funnelll includes Outgrow, ActiveCampaign, CleverTap, Moosend, Act-On, Omnisend, ActiveTrail, MaaxMarket, Webmecanik Automation, Marketing Optimizer, AnyTrack, UseItBetter, Adobe Marketo Engage, Zoho Marketing Automation and Ackwire.