Yes, both Slack and Qwilr offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Qwilr is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Qwilr Starts at $66/Month when Billed Yearly.
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 Qwilr includes PandaDoc, Proposify, Quote Roller, Better Proposals, Proposable, Propoze, seProposals, NiftyQuoter, ProposalPad, Fresh Proposals and Prospero.