Yes, both Estimatess.io and Notion offer a Free Trial.
Estimatess.io is designed for Freelancers, Medium Business and Small Business.
Notion is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for Estimatess.io Starts at $10/Month whereas for Notion Starts at $4/Month when Billed Yearly.
Some top alternatives to Estimatess.io includes ClickUp, Smartsheet, Miro, Process Street, Wrike, Notion, HubSpot CRM, Rutamsoft Project Management, monday.com, Teamwork, ProjectManager.com, Microsoft Project, Projectworks, ProgressBoard, Quick Base, Project Insight and Simple Estimate.
Some top alternatives to Notion includes Jira, Knote, Trello, Confluence, Asana, Easynote, ClickUp, TWiki, MeisterNote and Zenkit Hypernotes.