ChemGlobe: Francium
- Electronic, thermal, and steric data along with an isotope table.
- http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/87.html

LANL: Francium
- Basic information and history.
- http://periodic.lanl.gov/elements/87.html

Wikipedia: Francium
- Properties of the element, including its history and characteristics.
- http://en.wikipedia.org/wiki/Francium

Lenntech: Francium
- Physical data and chemical properties.
- http://www.lenntech.com/Periodic-chart-elements/Fr-en.htm

EnvironmentalChemistry.com: Francium
- Atomic structure, chemical and physical properties, and table of nuclides.
- http://environmentalchemistry.com/yogi/periodic/Fr.html

It's Elemental: Francium
- Basic physical and historical information.
- http://education.jlab.org/itselemental/ele087.html

ChemicalElements.com: Francium
- Basic information, atomic structure, and isotopes table.
- http://www.chemicalelements.com/elements/fr.html

Francium Spectroscopy
- Research group at the State University of New York at Stony Brook. History, facts, trapping information, and production.
- http://fr.physics.sunysb.edu/francium_news/frconten.htm

Visual Elements: Francium
- Image, general and physical information, and key isotopes.
- http://www.chemsoc.org/viselements/pages/francium.html