Widely used commercial systems that provide functionality comparable to E-Class include:
Each of these systems provides a wide variety of conferencing and web conferencing functionality. E-Class provides the important core features found in these tools, not the full range of features found in all of them. E-Class does provide modest functional improvements in three areas, when compared to most commercially available tools. These improvements are:
A detailed review of each related tool follows in these subsections:
Following these reviews, a summary of the features is provided in a feature comparison matrix.