Password.link might be a bit more popular than CostStorage. We know about 1 link to it since March 2021 and only 1 link to CostStorage. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The business model regarding unlimited file uploads is questionable. I even read on r/DataHoarder that some use it as storage for *a lot* of files which can't be viable from a business perspective. AWS egress isn't cheap. Source: about 2 years ago
Keeper Security is an alternative that works with company SSO. Otherwise use a one time service like https://password.link/. Source: about 2 years ago
Backblaze B2 Cloud Storage - The lowest cost cloud storage on the planet: $0.005/GB/Month
One-Time Secret - One-Time Secret is a way to share sensitive information simple and secure.
Cloudike - Cloud storage solutions purpose-built for businesses.
Password Pusher - Go Ahead. Email Another Password.
CloudMounter - CloudMounter for Mac OS X: map Dropbox as network drive, mount OneDrive, Google Drive and Amazon S3; FTP client and WebDAV client.
1ty.me - If you need to send a password or some other form of simple but sensitive information to someone...