Yes, both Slack and Toggl Plan offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Toggl Plan is designed for Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Toggl Plan Starts at $8/User/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 Toggl Plan includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Wrike, TeamGantt, Rutamsoft Project Management, Asana, Teamwork, ProjectManager.com, Worksuite, Trackboard, RationalPlan, Plan, Quick Base, Resource Guru, TaskBlast and Taskiem.