# Existing fetchers To learn how to use dbnomics-toolbox, you may want to look at the source code of existing fetchers using it: - [dummy-fetcher](https://git.nomics.world/dbnomics-fetchers/dummy-fetcher): this is a particular fetcher that only exists for demonstration purpose - [eurostat-fetcher](https://git.nomics.world/dbnomics-fetchers/eurostat-fetcher) - [insee-fetcher](https://git.nomics.world/dbnomics-fetchers/insee-fetcher) - [oecd-fetcher](https://git.nomics.world/dbnomics-fetchers/oecd-fetcher) - [ons-fetcher](https://git.nomics.world/dbnomics-fetchers/ons-fetcher) Note: at the time of writing, a subset of the DBnomics fetchers use dbnomics-toolbox as a foundation.