Yes, both Taiga and Notion offer a Free Trial.
Taiga is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Notion is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for Taiga Starts at $5/User/Month when Billed Yearly whereas for Notion Starts at $4/Month when Billed Yearly.
Some top alternatives to Taiga includes Smartsheet, Miro, Process Street, Wrike, Notion, Jira, GitScrum, ProjectManager.com, OpenProject, Backlog, Kanbanize, Quick Base, ClickUp, Height, Yodiz and Kanban Zone.
Some top alternatives to Notion includes Jira, Knote, Trello, Confluence, Asana, Easynote, ClickUp, TWiki, MeisterNote and Zenkit Hypernotes.