Glass databases  Glass databases are a collection of glass compositions, glass properties, glass models, associated trademark names, patents etc. These data were collected from publications in scientific papers and patents, from personal communication with scientists and engineers, and other relevant sources. Since the beginning of scientific glass research in the 19th century thousands of glass property-composition datasets were published. The first attempt to summarize all those data systematically was the monograph "Glastechnische Tabellen". World War II and the Cold War prevented similar efforts for many years afterwards. In 1956 "Phase Diagrams for Ceramists" was published the first time, containing a collection of phase diagrams. This database is known today as "Phase Equilibria Diagrams". In 1991 the Japanese database Interglad was created, followed by the publication of the "Handbook of Glass Data" in 1993. The "Handbook of Glass Data" was later digitalized and substantially expanded under the name SciGlass. Currently, SciGlass contains properties of about 350,000 glass compositions, INTERGLAD about 300,000, and "Phase Equilibria Diagrams" includes about 20,000 diagrams. The following list of glass database contents is not complete, and it may not be up to date. For full features see the references section below. All databases contain citations to the original data sources and the chemical composition of the glasses or ceramics.