ActiveCollab

ActiveCollab combines project management, time tracking, and invoicing in one platform. Its time tracking features include a task timer, manual entries, and detailed reports that feed directly into client invoices and profitability analysis. It is targeted at small creative agencies and freelancers. Pricing includes a self-hosted option.

It ranks as a good, integrated solution for its seamless flow from task assignment to time tracking to billing, reducing administrative overhead. Its strength lies in serving the end-to-end needs of client-service businesses within a single, cohesive environment.