send-sync-static
A very very basic crate, whose only purpose is to allow marking types Send + Sync + 'static. No dependencies, no nothing. That's it.
Usage
The SSS trait is a shortcut for Send + Sync + 'static. Use it to mark a type as fulfilling these requirements. E.g.
pub async
You can also use FutureSSS which is simply a shorthand for Future + SSS.
License
Apache 2.0. This crate has so little code, it might not even be licensable.