<strong>music:</strong> mplayer
<strong>video:</strong> mplayer
<strong>file manager:</strong> coreutils
<strong>irc client:</strong> rirc - shell script after xero told me it was possible
<strong>terminal emulator:</strong> st
<strong>shell:</strong> mksh / ash (with keybindings)
<strong>multiplexer:</strong> dvtm - abduco
<strong>system monitor:</strong> ps - top
<strong>text editor:</strong> vis (no, no vim here :P)
<strong>screenshot:</strong> scrot
<strong>torrent client:</strong> transmission, until I really need do torrent
<strong>mail client:</strong> isync (the executable is mbsync) + mail
<strong>rss client:</strong> script of mine
<strong>other/fun:</strong> calendar script - icat - drawille awk script

If curious, all the s{h,cr}i[p]ts are at http://github.com/sshbio/dot/tree/master/bin

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Stats so far:


It may not be very accurate, but at least it gives an idea.