The best alternatives to Endangered Sounds Museum are Vibe Boost, My 2000's TV, and TuneStalgia. If these 3 options don't work for you, we've listed a few more alternatives below.
VB is a digital museum primarily consisting of AMVs (anime music videos), featuring a collective of returning Vine editors. It is an exclusive social network whose goal is to support “bedroom creators” through the preservation and promotion of their content.
TuneStalgia is like Snapchat memories except for Music! See the songs you added or last played years ago. Users get songs back into their rotation that they forgot they loved, and get a burst of nostalgia of the last moment they have with that song.
Audiovisual portraits of the sounds and sights of Maine. Enabling moments of vicarious travel, meditation, and immersion in this state's endlessly intriguing natural and manmade spaces.