Had a quick browse through to see if anything stands out. From what I can tell: they used public transport, they liked installing themes and Maemish is lucky it still works as they've been using N900Fly.

There are some wallpapers that look like they originate from Nokia that I don't recall. That doesn't mean a lot as I've never changed from the default bubbles.

Theres a few apps that stand out.
maemish_21112018.tar\maemish\mmcblk0p2\opt\maemo\u sr\bin\
cisco-decrypt
cp-nemo
epconf
epconf-abook
epconf-mc-tool
epconftool
pcf2vpnc
rdesktop
rdesktop-m5ui

rdesktop is in extras-devel. Having just looked at the latest deb though, it does not create rdesktop-m5ui. Our package is dated 2010-02-09 14:10 UTC where as the guide mentioned below is dated 2011-02-03 so it would appear this is customized/updated.

Remote Desktop Guide:
maemish_21112018.tar\maemish\mmcblk0p2\opt\maemo\u sr\share\rdesktop-m5ui\
maemish_21112018.tar\maemish\mmcblk0p2\opt\maemo\u sr\share\epconf-sets\blue\ (Has a link to some related files, but doesn't seem to work).

Nemo? Has control panel icon. Banner mentions Check Point Software Technologies, who bought Nokia Security Appliance Business in 2009 (https://www.theregister.co.uk/2008/1...k_point_nokia/)
maemish\mmcblk0p2\opt\maemo\usr\share\icons\hicolo r\scalable\apps\
Other icons in various size (18x18, 64x64) folders
maemish_21112018.tar\maemish\mmcblk0p2\opt\maemo\u sr\share\icons\hicolor\

Hiro VPN:
maemish_21112018.tar\maemish\mmcblk0p2\opt\maemo\u sr\sbin\
maemish_21112018.tar\maemish\mmcblk0p2\opt\maemo\u sr\share\pixmaps\hiro-vpn\