The forum has a dedicated "Parts Sharing" section. Users upload verified .fzpz files (Fritzing bundle format).
These giants of the maker world maintain their own Fritzing libraries. You can find the Adafruit Fritzing Library SparkFun Fritzing Parts on GitHub. GitHub Search: If it’s a niche part, search GitHub for [Part Name] Fritzing [Part Name] .fzpz Fritzing Forum: "Parts Help" section fritzing library download