Free music and sound effects for your video or game

YouTube Audio Library

Free background music for your videos.
https://www.youtube.com/c/AudioLibraryEN

SoundBible

Free sound clips.
https://soundbible.com/

GDC Game Audio Bundles

Each year they publish 27.5GB+ of high-quality royalty-free sound effects.
Last year bundle: https://gdc.sonniss.com/
Previous years bundles: https://sonniss.com/gameaudiogdc

Pixabay Music and Sound Effects

Royalty-free
https://pixabay.com/music/
https://pixabay.com/sound-effects/

Punchdeck

Free orchestral and electronic music under Creative Commons license.
[Reddit post] [Archive] [YouTube channel]

Bensound

Royalty Free Music for Videos
https://www.bensound.com/

PDSounds.org

Not sure about the license and quality.
https://pdsounds.org/

Splice

Millions of royalty-free one-shots, loops, FX, MIDI and presets. Offers paid plans and requires registration.
https://splice.com/

Free Music Archive

Royalty free music.
https://freemusicarchive.org/

Archive.org

Audio archive
Live music archive

Bonus

56 Best Websites to Create Awesome Royalty Free Sound Effects (archived article from 2014.)

Translation / localization platforms

In alphabetical order:

Crowdin

Homepage | Pricing

They claim to be AI powered. Free tier has unlimited public projects and one private project.

Localazy

Homepage | Pricing

 

Loco

Homepage | Pricing

Free for up to 2,000 translations. 2 private projects.

Localizely

Homepage | Pricing

Free tier has 250 hosted string keys, 1 Project, Unlimited Users, Unlimited Languages. Separate request form for open source projects.

 

Phrase

Homepage | Pricing

No free plan.

Smartling

Homepage | Pricing

They also claim to be AI enabled. It's trendy. Plans don't even mention the prices.

Transifex

Homepage | Pricing

Yep, AI empowered. No free plans but they are free for open source projects. You need to contact them in order to see if your project qualifies.

Weblate

Homepage | Pricing

Copylefted libre software, used by over 2,500 libre software projects and companies in over 165 countries.

You can even self-host it. Public projects get free plan.

This time, I need translations for a free, open-source project, so I guess the most natural decision would be to go with a free, open-source translation platform. Weblate, that is.