This document summarizes an upcoming workshop titled "Advancing Software for Ecological Forecasting" which will bring together scientists and developers working on improving model-data fusion, prediction workflows (scientific workflows), and facilitating inter-operability of different statistical engines (inference engines). The workshop aims to enable collaboration and development of improved software. The 3 day agenda includes plenary talks on the first day to establish goals. The second day will include keynote talks and workshops to identify opportunities for existing tools to interface and key gaps. The third day will focus on organizing outputs and conclusions from the workshop. Intended outcomes include working papers, funding proposals, community resources, and new networks.