These are descriptions of the packages in the Slackware contrib directory:

ax25-apps-0.0.4: AX.25 applications 0.0.4
ax25-apps-0.0.4:
ax25-apps-0.0.4: These are the essential applications for use with AX.25
ax25-apps-0.0.4: packet radio.
ax25-apps-0.0.4: Requires libax25 to be installed.

ax25-apps-0.0.4-cfg: AX.25 application configuration files
ax25-apps-0.0.4-cfg:
ax25-apps-0.0.4-cfg: These are the configuration files for the AX.25 application
ax25-apps-0.0.4-cfg: set. Don't forget to edit these for your station!

ax25-tools-0.0.6: AX.25 tools version 0.0.6
ax25-tools-0.0.6:
ax25-tools-0.0.6: Author: Craig Small VK2XLZ <csmall@small.dropbear.id.au>, et al
ax25-tools-0.0.6: Needs: glibc2.1, A Modern kernel (2.2.x), libtool,
ax25-tools-0.0.6: libax25 0.0.5 or better, zlib.

ax25-tools-0.0.6-cfg: AX.25 tools configuration files
ax25-tools-0.0.6-cfg:
ax25-tools-0.0.6-cfg: These are the configuration files for the AX.25 tool set.
ax25-tools-0.0.6-cfg: Don't forget to edit these for your station!

libax25-0.0.7: AX.25 libraries version 0.0.7
libax25-0.0.7:
libax25-0.0.7: This library set is still really under test but is now release
libax25-0.0.7: for general use. You are supposed to use glibc 2.1 (libc6
libax25-0.0.7: unstable libraries) for this package. This code is alpha, use at
libax25-0.0.7: your own risk. Authors: Jonathan Naylor, Tomi Manninen,
libax25-0.0.7: Jean-Paul ROUBELAT, Alan Cox.

libax25-0.0.7-cfg: AX.25 library configuration files
libax25-0.0.7-cfg:
libax25-0.0.7-cfg: These configuration files belong to the libax25 package.
libax25-0.0.7-cfg: Don't forget to edit these for your station!

linkt-0.6.3pre6: LinKT - the Linux KDE packet radio Terminal
linkt-0.6.3pre6: 
linkt-0.6.3pre6: Includes MonKT and ax25spyd-0.23


node-0.3.0: AX.25 node version 0.3.0
node-0.3.0:
node-0.3.0: This is a simple node frontend for Linux kernel AX.25, NETROM,
node-0.3.0: ROSE and TCP. Author: Tomi Manninen OH2BNS, <tomi.manninen@hut.fi>

node-0.3.0-cfg: AX.25 node configuration files
node-0.3.0-cfg:
node-0.3.0-cfg: These are the configuration files for AX.25 node.
node-0.3.0-cfg: Don't forget to edit these for your station!

z8530drv-utils-3.0: Utilities for Z8530 based SCC boards by Joerg Reuter DL1BKE.
z8530drv-utils-3.0: Needs scc support enabled in the kernel, or have the scc.o
z8530drv-utils-3.0: module loaded.
z8530drv-utils-3.0: 
z8530drv-utils-3.0: Edit /etc/ax25/z8530drv.conf to fit your configuration.