Hypertonia World Enterprises
An indie cassette label covering all sorts of strange experimental stuff as well as poppy material. With articles, catalog and comics.

Holler Records
Independent music and multimedia label featuring artists engaged in experimental/improvisational music and visual art.

Hertz-Lion/YIELD
A source of information about and label/catalog releasing experimental music.

Hardact Records
Label based in Switzerland, promoting experimental music by artists such as Kippu, Otaslogi-c, and Kinderkompost.