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Feature checklists make every tool look equivalent. This table leads with the three things that actually differ — what it costs you before it works, whether your files leave your device, and where the free version stops.
| Onetime Secretonetimesecret.com | Bitwarden Sendbitwarden.com | file.iofile.io | Tresorit Sendsend.tresorit.com | |
|---|---|---|---|---|
| What it does | Puts a secret behind a link that destroys itself once it is opened | Shares a password through a link that stops working after one view | Uploads a file and deletes it the moment someone downloads it | A 5 GB end-to-end encrypted drop that needs no sign-up on either side |
| What it costs you | No sign-upWorks the moment the page loads. No account, no email, no trial. | Free tierA genuinely usable free tier with paid plans for volume or team features. | No sign-upWorks the moment the page loads. No account, no email, no trial. | No sign-upWorks the moment the page loads. No account, no email, no trial. |
| Your files | Runs on their server | Runs on their server | Runs on their server | Runs on their server |
| Where it stops | Text only and length-limited — there is no way to attach a file to a secret. | File sends need a paid Bitwarden account — only text sends are included free. | The file is gone after the first download, so a recipient who fumbles the link cannot try again. | Capped at 5 GB per link and the link expires — it is a transfer, not shared storage. |
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| Category | File Sharing & Transfer | File Sharing & Transfer | File Sharing & Transfer | File Sharing & Transfer |
| Last checked | 2026-07-29 | 2026-07-29 | 2026-07-29 | 2026-07-29 |
| Open the site | Open | Open | Open | Open |
This comparison is in the address bar — copy the URL to send it to someone.