Extra data products
The whole is greater than the sum of its parts. Additional to the Gaia data we host catalogues for cross match purposes - that's what SQL does best.
Gaia EDR3 contributions
The contributions to Gaia EDR3 contain the StarHorse catalogs (v1.1, v1.2), J2000 positions.
Gaia DR2 Contributions
Tables derived from GDR2 data. StarHorse catalog (v0.5 and v0.6). Starhorse v0.6 was released after GEDR3 and contains dr3_source_id (source_id of gaiaedr3), angular_distance, magnitude_difference, proper_motion_propagation and dup_max_number.
Crossmatch catalogues
Further catalogues were added for crossmatch services, such as UNWISE, and its crossmatch with Gaia DR2, ALLWISE catalogues or SDSS Data Release 9.