Undernotes is an independent perfume library and discovery guide focused on fragrances from houses run by the people who compose them. It brings together information gathered from makers’ own websites, organizing listings by fragrance notes, olfactive families, concentration and country. Visitors can explore houses, search for particular scents or notes, and browse comparisons that highlight independent fragrances sharing accords with familiar perfumes.

The library also features maker profiles, new arrivals, a journal and curated selections, helping readers discover a wide range of independent perfumery. Its collection spans 102 houses, 3,172 fragrances, 1,358 notes and 27 countries, with categories ranging from citrus and florals to woods, resins, gourmand scents, incense and leather. Listed products include perfumes and colognes in formats such as eau de parfum, oils and attars, alongside related offerings from some makers, including incense, soap, lotion and body products.

Undernotes does not sell the listed items; each listing links back to its maker, and comparisons are presented as independent suggestions rather than copies or dupes