C-Desk

C-Desk is best for very small businesses or nonprofits that need a basic helpdesk and internal communication tool without spending a dime. The completely free core plan is a real standout, giving you ticket management, asset tracking, and even a simple intranet — all in one place. The downside is that the interface feels dated and it lacks the polish and integrations you'd get from modern tools like Freshdesk or Zoho Desk.