Extractors are tools used to move data from various source systems to CDF. The extractors API is used to manage extractor releases, give access to downloads, and contextualize which source systems each extractor is used to access.
Each extractor has a list of releases, and each release may have a list of artifacts which are things like documentation PDFs, executables, and installers.
Extractors may also be tied to source systems through solutions, representing concrete sources each extractor may connect to.
The extractors API is currently read-only. In the future it may be possible to define per-project extractors. Because of this, cognite-maintained extractors and source systems currently have their external ID prefixed by cognite-.