This dataset contains ultraviolet and optical photometric data from GALEX, UVOT, and Gaia, along with stellar parameters (T_{eff}, [Fe/H], log g) derived from spectroscopic surveys and Gaia XP spectra. It provides Gaia G_{BP}G_{RP} color excess measurements for 92,142,820 sources, as well as color excess measurements for 11,624,802 and 65,531 stars in GALEX/near-UV and far-UV bands, and 336,633, 137,739, and 253,271 stars in UVOT/uvw1, uvm2, and uvw2 bands. Additionally, it includes extensive Rv measurements for a large number of stars and constructs ultraviolet extinction maps with unprecedented coverage, offering critical insights into interstellar extinction laws and dust distribution.