Free FTP server with FTPS and SFTP, for testing

Yes. A test server costs nothing and needs no account or card. It runs for one hour with 1 GB of storage. If you need a server that stays, a 7-day trial gets you one with your own users, webhooks and storage, also without a card.

Yes. Passive mode is on with a range of data ports, so it works through NAT and firewalls. FTPS uses explicit TLS: connect to the FTP port and upgrade with AUTH TLS (lftp, FileZilla and curl --ssl-reqd do this). Implicit FTPS on port 990 isn't offered.

All three on one host: SFTP on its own port, and FTP with optional explicit TLS (FTPS, AUTH TLS) on another, with passive mode. Plain FTP is there for testing old clients and devices. It sends the password unencrypted, so use SFTP or FTPS for anything that matters.

1 GB of storage and 1000 files, one user with a password, one hour. Each visitor can create two test servers per day, and only a few run at the same time for everyone, so the button may ask you to try again in a few minutes.

No. After an hour the server and its files are deleted for good, and so is the event log on the page. For a permanent server with the same features, start a 7-day trial. It takes about a minute.

Treat it as a public test box: use test data only. The connection is encrypted over SFTP and FTPS, files are stored privately and never shared by link, and everything is deleted after the hour. But anyone who sees the credentials on your screen can log in until then.

The IP address that created the server, and each file event (time, path, size, protocol, client IP), kept for 30 days to deal with abuse. Uploading illegal content or using the server to distribute files is forbidden. We delete such servers and report abuse.