par2cmdline from debian sid builds on scratchbox (the SDK) as is, the other two complain about dependencies which are probably easy to solve if one has the time and inclination (I'm busy with this thing).

So grab the SDK and dive in: add sid repo as deb-src line to your sources.list and then "apt-get source packagename", it will extract the source for you, cd to the directory and run "dpkg-buildpackage -rfakeroot -b", first files to muck about when there is trouble are debian/control and debian/rules.

When they vuild cleanly you can copy the .debs to your device and (as root) use "dpkg -i package.deb" to install.

If you would like others to benefit from your hard work and score some karma make new source packages (with dpkg-buildpackage) and submit them to the maemo extras autobuilder (and then they can be installed via the application manager).