Harmony PSA is described as 'An enterprise-wide platform with no handoffs, modules, rekeying or stale data where nothing can be lost or missed' and is an app in the Business & Commerce category. There are three alternatives to Harmony PSA for Online / Web-based, Self-Hosted solutions and SaaS. The best alternative is Goals by KeepSolid, which is free. Other great apps like Harmony PSA are Evadastudio (Paid) and Trellis Desk (Free, Open Source).
Evadatudio - The awesome way to manage your projects Real-time project & task management: Every action you make, from creating a project, a task to writing a comment or updating a status will be visible instalty to your team.