- The Microbiology Information Portal
- The Bad Bug Book - Information on pathogenic bacteria
- Center for Disease Control - Government agency that monitors infectious diseases
- Microbial Investigations - Some simple lab activities using microbes
- Access Excellence - Activities and resources in biology for teachers
- RasMol and Chime for Molecular Modeling - Programs for viewing molecules in 3D
- American Society for Microbiology
- Microbiology Video Library - Quicktime videos related to microbiology
- Microbiology Animations - Quicktime videos related to microbiology
- Cells Alive - Images of cells
- NanoWorld Image Database - Electron micrographs of cells and cell structures