One good option is Todo.is. It's got a lot of project management features, including the ability to create multiple projects, assign tasks to team members, set due dates and track progress. It's also collaborative, letting you invite team members and assign tasks to them. Todo.is offers two pricing plans: Pro for $9 per month or $7.50 per month if you pay annually, with a maximum of 10 projects and 10 user teams per project, and Business for $29 per month or $22.50 per month if you pay annually, with unlimited projects and 50 user teams per project.
Another option is ClickUp, an all-purpose project management tool that combines tasks, goals and chat in one interface. It's got features like centralized project chat, customizable views and tight integration with other apps. ClickUp offers several pricing plans, starting with a free plan and rising to Enterprise, which has custom pricing, so it should accommodate teams of various sizes and needs.
If you want something highly customizable, check out monday.com. It lets you manage work, projects and workflows with customizable products. It's got automation tools and real-time data insights, too, so it should work for teams large or small. monday.com offers a free plan and several other pricing plans, so you should be able to find something that works for you.