Simple commodity which turns the shift key in a 'capslock-toggle' key:
if capslock is off, the shift key + an alphabetic key produces an uppercase
  character, an usual;
if caplsock is on, the shift key + an alphabetic key produces a lowercase
 character.  
Can also disable capslock when a function key or a qualifier are pressed.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  284     632  44.9% -lh5- 3dd3 Aug 21  1993 CapShift.info
[generic]                 5332    8564  62.3% -lh5- 45b2 Aug 19  1993 CapShift/CapShift
[generic]                  320     577  55.5% -lh5- 0c62 Aug 21  1993 CapShift/CapShift.info
[generic]                  273     628  43.5% -lh5- 321e Aug 21  1993 CapShift/Catalogs.info
[generic]                  456    1553  29.4% -lh5- 3df8 Aug 19  1993 CapShift/Catalogs/CapShift.ct
[generic]                  317     833  38.1% -lh5- 7246 Aug 20  1993 CapShift/Catalogs/CapShift.ct.info
[generic]                  373     660  56.5% -lh5- 9383 Aug 19  1993 CapShift/Catalogs/italiano/CapShift.catalog
[generic]                  276     628  43.9% -lh5- 7e68 Aug 21  1993 CapShift/Doc.info
[generic]                  285     632  45.1% -lh5- 8546 Aug 21  1993 CapShift/Doc/English.info
[generic]                  705    1733  40.7% -lh5- 4ef2 Aug 21  1993 CapShift/Doc/English.readme
[generic]                  236     463  51.0% -lh5- 7496 Aug 21  1993 CapShift/Doc/English.readme.info
[generic]                 3479   10225  34.0% -lh5- 7afb Aug 21  1993 CapShift/Doc/English/CapShift.doc
[generic]                  232     463  50.1% -lh5- a8ef Aug 20  1993 CapShift/Doc/English/CapShift.doc.info
[generic]                 3765   11382  33.1% -lh5- dda0 Aug 21  1993 CapShift/Doc/English/CapShift.guide
[generic]                  241     469  51.4% -lh5- 5606 Aug 20  1993 CapShift/Doc/English/CapShift.guide.info
[generic]                  285     632  45.1% -lh5- 07b1 Aug 21  1993 CapShift/Doc/Italiano.info
[generic]                  821    1930  42.5% -lh5- 6b09 Aug 21  1993 CapShift/Doc/Italiano.leggimi
[generic]                  235     463  50.8% -lh5- 8248 Aug 21  1993 CapShift/Doc/Italiano.leggimi.info
[generic]                 3702   10794  34.3% -lh5- d549 Aug 21  1993 CapShift/Doc/Italiano/CapShift.doc
[generic]                  231     463  49.9% -lh5- 11b1 Aug 20  1993 CapShift/Doc/Italiano/CapShift.doc.info
[generic]                 3998   11972  33.4% -lh5- 8583 Aug 21  1993 CapShift/Doc/Italiano/CapShift.guide
[generic]                  241     469  51.4% -lh5- 36e0 Aug 20  1993 CapShift/Doc/Italiano/CapShift.guide.info
[generic]                  275     628  43.8% -lh5- 4120 Aug 21  1993 CapShift/Install.info
[generic]                  695    1704  40.8% -lh5- 5be8 Aug 21  1993 CapShift/Install/English
[generic]                  422     730  57.8% -lh5- 5267 Aug 21  1993 CapShift/Install/English.info
[generic]                  706    1731  40.8% -lh5- 020f Aug 21  1993 CapShift/Install/Italiano
[generic]                  421     731  57.6% -lh5- bab3 Aug 21  1993 CapShift/Install/Italiano.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        27 files   28606   71689  39.9%            Sep  2  1993