International GNSS Monitoring and Assessment (IGMA) is one of the important activities of International Committee of GNSS (ICG). In these years, IGMA Task Force has organized several workshops and monthly meetings to discuss the roadmap and technical details of GNSS monitoring and assessment for open signals. In this presentation, the goal, status, issues and plans of IGMA will be introduced along with the progress of each providers. In addition, the Joint Trial Project with IGS has been planned and currently investigated how to implement it in both ICG Providers and IGS sides. The latest status on the project are to be summarized in this presentation.