Wikipedia
JamBase
JamBase is an online database and news portal of live music and festivals with a focus on jam bands. It was founded by Andy Gadiel and Ted Kartzman in 1998. The website primarily acts as a service, providing a public API that concert promoters and venues use to publish concert data to the site. The data is also used by third-party developers for other products. In addition to raw data, the website includes a news section publishing information about concerts in a blog format.
JamBase ranks as the 4,945th most visited sites in the United States according to Alexa, and 27,837th globally.