https://w3c.github.io/payment-request/
https://w3c.github.io/permissions/
https://w3c.github.io/png/
https://w3ctag.github.io/privacy-principles/
https://w3c.github.io/proximity/
https://w3c.github.io/pub-manifest/
https://immersive-web.github.io/raw-camera-access/
https://w3c.github.io/reporting/
https://w3c.github.io/resource-timing/
https://arichiv.github.io/saa-non-cookie-storage/
https://w3c.github.io/mediacapture-screen-share/
https://w3c.github.io/screen-orientation/
https://w3c.github.io/screen-wake-lock/
https://wicg.github.io/scroll-to-text-fragment/
https://w3c.github.io/secure-payment-confirmation
https://w3c.github.io/selection-api/
https://drafts.csswg.org/selectors/
https://w3c.github.io/ServiceWorker/
https://github.com/pythagoraskitty/shared-storage/
https://storage.spec.whatwg.org/
https://wicg.github.io/storage-buckets/
https://w3c.github.io/system-wake-lock/
https://w3c.github.io/trace-context/
https://w3c.github.io/ttml2/
https://w3c.github.io/imsc/imsc1/spec/ttml-ww-profiles.html