FreshBooks is an accounting software with strong time tracking capabilities tailored for service-based businesses. It enables users to track billable hours, manage expenses, and seamlessly generate invoices, making it ideal for freelancers and small teams.

Paydirt is a time tracking application for freelancers, offering a complete invoicing suite. It facilitates accurate tracking of work hours and integrates invoicing, though it lacks extensive integrations and offline support.

TMetric is a time tracking tool that provides features like task and project tracking, reporting, billing, invoicing, team management, and integrations with popular project management and accounting platforms.

Xero is an online accounting platform that includes Xero Projects, a module for time tracking and project cost management, allowing businesses to track billable hours, monitor project profitability, and invoice based on logged time.

Fanurio is a cross-platform time tracking, invoicing, and billing software suitable for freelancers and small businesses looking for detailed time and expense management.

TEMS (Time and Expanse Management System) is a time and expense management system that enables users to track time and expenses across multiple projects and users. It also assists administrators with billing and invoicing, making it useful for organizations needing integrated time and expense tracking.