I ( that is, Lee) use an excellent program on my handheld computer (a Palm TX) called Palm Bible+.  This enables me to carry around the English Standard Bible, which is our standard Bible version at home and at church as well as the Greek (LXX & Nestle-Aland 27th Edition) and Hebrew (BHS) original texts.  There are also other resources available for this Bible program such as lexicons, commentaries, and that sort of thing.  It is all available here:

LXX & NT combined: www.wjsp.net/z_lxxgnt_r41.pdb
NT only: www.wjsp.net/z_gnt_r41.pdb
Parsed NA Greek: Click here, courtesy of http://www.stjamesturramurra.org.au
Graham Hind's Greek module with Strongs and Parsings http://www.sudburybaptist.co.uk/palmbible/z_whnu.PDB

Pointed BHS: Click here, courtesy of www.stjamesturramurra.org.au
Unpointed text: www.wjsp.net/q_hb_r2.pdb
Graham Hind's Hebrew module with Strongs http://www.grahamnind.dsl.pipex.com/files/q_BHSStrongs.PDB

See also http://www.grahamnind.dsl.pipex.com/files/ for various Hebrew and Greek stuff.

Other resources
A Dictionary programme called BDicty: http://www.beiks.com/palm/Bdicty.htm
Various Bdicty Lexicons http://www.gospelshare.org/fmdeluxe/index.php?action=category&id=49
PPI needed to call Bdicty from within PB+ http://www.plkr.org/snapshots/ppi_en.prc  Once installed you need to run it once and select "Bdicty". Then start PB+ and choose Options->Preferences->Interface, and select ‘Double Tap PPI’. This will enable you to double-click on a word (or a Strongs number in some Bible versions) and instantly call up teh BDicty entry on it. Very handy!

David Instone-Brewer of Tyndale House has produced a list of Palm Bible+ resources too: http://www.tyndale.cam.ac.uk/Tyndale/TTech/TTech036.htm

www.unboundbible.com

http://gospelshare.org/ps.bibleplus.main.php