Rumpus FTP turns any Mac or PC into a complete file transfer server. Send files to outside people, or let clients upload files directly to your network in a secure, controlled environment. Rumpus supports …

Users who originally purchased Rumpus 9 or earlier can purchase an upgrade by clicking the "Subscribe" button above. Subscribers receive a version 11 serial number, access to all future …

With the release of Rumpus 10, Maxum switched to a software subscription model that provides all users with reliable support and access to all software updates.

Jul 21, 2025 · Make sure that data port range is forwarded by your router and allowed by your network. As always, if you have any trouble getting FTP clients working properly, contact Maxum technical …

I'm John O'Fallon, founder of Maxum and lead developer of Rumpus. Since 1997, I've also been the person responsible for helping people when they have problems or otherwise have questions about …

Maxum has been selling Internet server software longer than just about anybody. When you have a question, we're here to help. We believe that you have a right to get the most out of the software you …

Technical support questions will normally be answered via e-mail, so be certain to enter your return e-mail address carefully. If your mail account is filtered, be sure you can accept mail from …

Maxum Development is a small company with a long history of creating unique software for the Macintosh.

Rumpus version 9.0 adds an expanded administration console, upgraded secure services support, user account self-registration, built in Let's Encrypt certificate support, and more.

The Web display of numerous content types have already been optimized, and the new display mechanism will allow Maxum to continually improve the display interface of individual content types …