Windows AltGr keyboard

Resulting selection of Unicode characters while pressing the AltGr modifier with the Windows US international layout. Macs have option options instead.

Esc
mode : numeric row shift ~ ◌̃ ! ¹ @ ◌̋ # ◌̄ $ £ % ◌̧ ^ ◌̂ & ◌̛ * ◌̨ ( ◌̆ ) ◌̊ _ ◌̣ + ÷
mode : numeric row ` ◌̀ 1 ¡ 2 ² 3 ³ 4 ¤ 56 ¼ 7 ½ 8 ¾ 90- ¥ = ×
mode : top row shift Q Ä W Å E É RT Þ Y Ü U Ú I Í O Ó P Ö {}
mode : top row q ä w å e é r ® t þ y ü u ú i í o ó p ö [ « ] »
mode : home row shift A Á S § D Ð F Ë G H J Ï K Œ L Ø : ° " ◌̈ | ¦
mode : home row a á s ß d ð f ë g h j ï k œ l ø ;' ◌́ \ ¬
mode : bottom row shift Z Æ X ◌̷ C ¢ V B N Ñ M ± < Ç > ◌̌ ? ◌̉
mode : bottom row z æ x · c © v b n ñ m µ , ç . ◌̇ / ¿

accented
decomposes to the original letter with a combining accent
similar
transliterates (mostly) into the unmodified letter
latin
a different (accented) latin letter
symbol
other character not directly deducible from key
punctuation
(punctuation) mark
combining
diacritical mark to be combined with a following character
xkb
unofficial extensions added in Linux (Gnome, KDE)