German Ergonomic Keyboard Layouts: de-ergo, NEO, ADNW
Here's a list of ergonomic keyboard layout for German language.
de-ergo layout
The de-ergo layout is perhaps the earlist optimized layout for Germany language.
http://forschung.goebel-consult.de/de-ergo/
NEO Layout
The NEO layout is efficient layout for German. Neo layout improved on de-ergo layout. Neo layout is started in 2004 by Hanno Behrens.
Home page http://www.neo-layout.org/ and original site http://pebbles.schattenlauf.de/layout/index_us.html

The neo layout has all vowels on the left hand side, so it optimize typing by altering hand, like Dvorak Keyboard Layout.
Neo layout version 2 is released on 2010-03-29. It changes the positions of X J Q keys by cyling them in that order. Also, new arrangement for layer 3, and added layer 4, 5, 6.
ADNW Layout
the ADNW (Aus der Neo-Welt) seems a improvement on Neo.
ADNW home page at: http://www.adnw.de/

International Layouts
Western Europe Layouts
- Idiocy of International Keyboard Layouts
- QWERTZ
- AZERTY
- German
- German Ergonomic
- Canadian Multilingual Layout
- French
- New AZERTY French Keyboard Layout (2019)
- French Ergonomic
- Bepo Layout (French)
- French Letter Frequency
- Spanish Keyboard Layouts
- Portuguese Ergonomic