5×3 Index Cards : Comparison table
| Company | Type* | Cut and Grid** | Grid Spacing** |
| Correct (Japan) | p, pp, r, rl, rv, q | Associated | 5 mm |
| L!fe (Japan) | p, r, c, q | Associated | 6 mm |
| Kokuyo (Japan) | p, r | - | - |
| Oxford (U.S.) | p, r, c, q | Random | 6 mm |
| Office Depot (U.S.) | p, c, q | Random | 6 mm |
| Mead (U.S.) | p, r, c | - | - |
| Ampad (U.S.) | p, r, c | - | - |
| 3M (U.S.) | rs, rs+c | - | - |
| Exacompta (France) | q+c | Random (?) | ? |
* : p : plain, pp : plain printable, r : ruled, rl : ruled library,
rv : ruled vertical, rs : ruled sticky, q : quadrille, c : color
** : For quadrille card
ref. : Reports by Leopard, Gregkise, John, Ayalan, and David.
and Photo @ flickr by Alina Mikadze, and by Kaj
Any additional information is welcome :)
Revised 2007.01.06 08:27 : Add grid spacing
Revised 2007.01.04 00:12 : Correction for L!fe’s card after Kaj’s comments.

January 18th, 2007 at 8:20 am
This is driving me potty! Where can I find these cards?? I’m in the UK and cannot find them anywhere. And when I look on the US sites, I still can’t find them. Can somebody point me to an exact place please? I have friends in LA that can bring things over for me. I’d love to get some of these quad index cards.
Cheers,
Jon.