All software can be downloaded using FTP. Most software has open source licenses, such as the GPL, LGPL or a BSD style license. See individual packages for details. 

Coda File System

Source code and binaries for Coda are in ftp://ftp.coda.cs.cmu.edu/pub/coda.
The LICENSE is described in ftp://ftp.coda.cs.cmu.edu/pub/coda/LICENSE

Odyssey

Source code for Odyssey is in ftp://ftp.coda.cs.cmu.edu/pub/odyssey.
The LICENSE is described in ftp://ftp.coda.cs.cmu.edu/pub/odyssey/LICENSE

PowerScope

Source code for PowerScope is in ftp://ftp.coda.cs.cmu.edu/pub/pscope.
The LICENSE is described in ftp://ftp.coda.cs.cmu.edu/pub/pscope/LICENSE

RVM

The latest distribution of RVM is always in the Coda sources. If you want RVM by itself, you can find source code at ftp://ftp.coda.cs.cmu.edu/pub/rvm.
The LICENSE is described in ftp://ftp.coda.cs.cmu.edu/pub/coda/LICENSE.

RPC2

The latest distribution of RPC2 is always in the Coda sources. If you want RPC2 by itself, you can find source code at ftp://ftp.coda.cs.cmu.edu/pub/rpc2.
The LICENSE is described in ftp://ftp.coda.cs.cmu.edu/pub/coda/LICENSE.

SynRGen

Source code can be found at:ftp://ftp.coda.cs.cmu.edu/pub/synrgen.
The LICENSE file ftp://ftp.coda.cs.cmu.edu/pub/synrgen/LICENSE describes the conditions of use.

DFSTrace

Source code is in project/dfstrace.
Copyright notice in the README file states terms of distribution.

Andrew Benchmark

Source code is in user/satya/ab.
Conditions of use are in the README file.

Mobile Network Tracing

Source code is in ntrace.tar.
Read this first for the contents of the distribution
Conditions of Use can be found here.
Last updated Mar 9, 2000, satya@cs.cmu.edu