EVenn is a comprehensive platform for visualizing set relationships through various Venn diagrams, including interactive Venn diagrams, Euler diagrams, UpSet plots, flower plots, and Venn networks. It provides a standardized data format for efficient data exploration and visualization, enabling researchers to analyze multiomics data. The platform includes a data center for uploading and analyzing data, with a user-friendly interface that supports multiple data types. EVenn offers a range of tools for analyzing intersections, overlaps, and relationships among sets, with features such as interactive layouts, statistical significance computation, and visualization of gene interactions, protein interactions, and metabolite interactions. The platform is designed to handle complex data sets, including those with up to 40 sets, and provides detailed case studies across various omics fields, such as metabolomics, genomics, transcriptomics, and microbiome analysis. EVenn streamlines data input and offers flexible upload options, including local file uploads and direct data pasting. It also includes intelligent parameter constraints to enhance user experience and prevent errors. The platform is supported by multiple funding sources and is intended to serve as a valuable resource for researchers in multiomics analysis, facilitating the exploration of novel insights and enabling data-driven decision-making. The platform's versatility is demonstrated through its ability to generate various types of plots and diagrams, making it a powerful tool for visualizing and analyzing complex data sets.EVenn is a comprehensive platform for visualizing set relationships through various Venn diagrams, including interactive Venn diagrams, Euler diagrams, UpSet plots, flower plots, and Venn networks. It provides a standardized data format for efficient data exploration and visualization, enabling researchers to analyze multiomics data. The platform includes a data center for uploading and analyzing data, with a user-friendly interface that supports multiple data types. EVenn offers a range of tools for analyzing intersections, overlaps, and relationships among sets, with features such as interactive layouts, statistical significance computation, and visualization of gene interactions, protein interactions, and metabolite interactions. The platform is designed to handle complex data sets, including those with up to 40 sets, and provides detailed case studies across various omics fields, such as metabolomics, genomics, transcriptomics, and microbiome analysis. EVenn streamlines data input and offers flexible upload options, including local file uploads and direct data pasting. It also includes intelligent parameter constraints to enhance user experience and prevent errors. The platform is supported by multiple funding sources and is intended to serve as a valuable resource for researchers in multiomics analysis, facilitating the exploration of novel insights and enabling data-driven decision-making. The platform's versatility is demonstrated through its ability to generate various types of plots and diagrams, making it a powerful tool for visualizing and analyzing complex data sets.