Network members recommend.

Free:

• BBC Sound Effects (free but check license limitations)

• Free Sound

• Adobe Audition sound effects packages

• Pixabay (images, music and sound FX - free but license limitations)

• Mixkit (free but check license terms)

• Free Music Archive (free access but paid options for use in video projects)

Paid:

• Artlist.io (music, SFX, stock footage - monthly subscription options)

• Artgrid.io (stock footage - monthly subscription options)

• Audiio.com (music - annual/lifetime subscription options)

• Pro Sound Effects (pay per sound or monthly subscription options)

• Bensound (monthly subscription options)