Fluxer is a web application for the computation and interactive visualization of flux graphs from genome-scale metabolic models. Flux Balance Analysis is used to calculate the flux of the metabolic network, which can then be visualized with spanning trees, k-shortest paths, and complete graphs.

Around 1,000 genome-scale metabolic models are currently curated in the application and available for visualization. In addition, any user can upload their own SBML metabolic models for Fluxer to compute, analyze, and visualize their flux graphs. Each model is assigned a permanent, unique URL that can be shared by email or include as a link in manuscripts.

New models can be created by merging two or more models with mergem, which can also be used to visually compare multiple models or translate their metabolite and reaction IDs to other database systems. Generated graphs can be downloaded as high-quality images or GraphML and models as SBML.