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Not-So-Bad Distribution is an automated Web-based distribution system designed for distributing free software on the internet, where users cannot trust the network and cannot entirely trust the software maintainers. NSBD authenticates packages with GNU Privacy Guard (GnuPG) or "Pretty Good(Tm) Privacy" (PGP(Tm)) digital signatures so users can be assured that packages have not been tampered with, and it limits the maintainer to only update selected files and directories on the user's computer. NSBD's focus is on security, leaving as much control as is practical in the users' hands. NSBD handles automated updates by supplying a means of checking for updates to packages and automatically downloading and installing the updates. This "automated pull" style of distribution has the same effect as the "push" style of distribution, but gives more control to the user. A direct "push" style is also supported, which is especially appropriate for situations where there are multiple contributors to a shared server (for example, a shared web-page server). NSBD can "pull" directly over http or by using rsync to minimize network usage.


User manpage available from


Download version 1.6 (stable)
released on 26 September 2003



LicenseVerified byVerified onNotes
GPLv2orlaterJanet Casey18 July 2001

Leaders and contributors

Dave Dykstra Maintainer

Resources and communication

Audience Resource type URI
Bug Tracking,Developer,Support E-mail

Software prerequisites

Kind Description
Required to build the tcl and tk "plus patches"
Weak prerequisite rsync
Required to use GnuPG or PGP
Required to build tcl 8.0.5
Required to build tk 8.0.5

This entry (in part or in whole) was last reviewed on 2 March 2005.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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