The original unWISE coadds (Dustin Lang), using data from the original WISE mission. These are WISE bands W1, W2, W3, and W4.
Aaron Meisner's updated unWISE coadds using data from the original WISE mission plus year 1 of the NEOWISE-Reactivation mission. These are WISE bands W1 and W2 only (W3 and W4 did not change; see the
allwise/ directory for these).
Up to year 2 of NeoWISE-Reactivation.
Up to year 3 of NeoWISE-Reactivation.