"ReverbNation.com is the leading online music-marketing platform used by over 1,935,000 artists — plus managers, record labels, and venues — to grow their reach, influence, and business across the internet. ReverbNation.com provides free and affordable solutions to individual artists and the music industry professionals that support them."
"Music4Games.Net delivers an invaluable spotlight on today’s emerging video game soundtrack industry and is the leading provider of game music infotainment for dedicated gamers, developers, publishers, producers, audio directors, composers..."
Encourages gender balance in film and entertainment industries by providing networking, professional development, and advocacy for above and below the line women and all genders who love making movies with them.
Bandcamp provides "fast, dependable streaming and downloads of your entire catalog, adorn your tracks with all the metadata they need to sail into iTunes," and assists with your branding and marketing of your music.
"Sonicbids is the leading platform for bands to get gigs and promoters to book a band online." As the developer described it, it's like ebay--an online marketplace eBay connects artists and bands of all kinds with music promoters. The site has a blog with marketing ideas.