This list shows the CSS properties that is available from getComputedStyle() in Webkit browsers (Safari 3 and Chrome 1 as of this writing). Essentially, this shows which CSS properties Javascript can read from stylesheets in Webkit. Some are missing, like "content" and "counter-increment", while about 50 vendor-specific properties can be accessed. Also, rule 131-168 appears to be SVG properties.
0 - background-attachment
1 - background-color
2 - background-image
3 - background-position
4 - background-repeat
5 - border-bottom-color
6 - border-bottom-style
7 - border-bottom-width
8 - border-collapse
9 - border-left-color
10 - border-left-style
11 - border-left-width
12 - border-right-color
13 - border-right-style
14 - border-right-width
15 - border-top-color
16 - border-top-style
17 - border-top-width
18 - bottom
19 - caption-side
20 - clear
21 - color
22 - cursor
23 - direction
24 - display
25 - empty-cells
26 - float
27 - font-family
28 - font-size
29 - font-style
30 - font-variant
31 - font-weight
32 - height
33 - left
34 - letter-spacing
35 - line-height
36 - list-style-image
37 - list-style-position
38 - list-style-type
39 - margin-bottom
40 - margin-left
41 - margin-right
42 - margin-top
43 - max-height
44 - max-width
45 - min-height
46 - min-width
47 - opacity
48 - orphans
49 - outline-color
50 - outline-style
51 - outline-width
52 - overflow-x
53 - overflow-y
54 - padding-bottom
55 - padding-left
56 - padding-right
57 - padding-top
58 - page-break-after
59 - page-break-before
60 - page-break-inside
61 - position
62 - resize
63 - right
64 - table-layout
65 - text-align
66 - text-decoration
67 - text-indent
68 - text-shadow
69 - text-transform
70 - top
71 - unicode-bidi
72 - vertical-align
73 - visibility
74 - white-space
75 - widows
76 - width
77 - word-spacing
78 - word-wrap
79 - z-index
80 - -webkit-appearance
81 - -webkit-background-clip
82 - -webkit-background-composite
83 - -webkit-background-origin
84 - -webkit-background-size
85 - -webkit-border-fit
86 - -webkit-border-horizontal-spacing
87 - -webkit-border-vertical-spacing
88 - -webkit-box-align
89 - -webkit-box-direction
90 - -webkit-box-flex
91 - -webkit-box-flex-group
92 - -webkit-box-lines
93 - -webkit-box-ordinal-group
94 - -webkit-box-orient
95 - -webkit-box-pack
96 - -webkit-box-shadow
97 - -webkit-box-sizing
98 - -webkit-column-break-after
99 - -webkit-column-break-before
100 - -webkit-column-break-inside
101 - -webkit-column-count
102 - -webkit-column-gap
103 - -webkit-column-rule-color
104 - -webkit-column-rule-style
105 - -webkit-column-rule-width
106 - -webkit-column-width
107 - -webkit-highlight
108 - -webkit-line-break
109 - -webkit-line-clamp
110 - -webkit-margin-bottom-collapse
111 - -webkit-margin-top-collapse
112 - -webkit-marquee-direction
113 - -webkit-marquee-increment
114 - -webkit-marquee-repetition
115 - -webkit-marquee-style
116 - -webkit-nbsp-mode
117 - -webkit-rtl-ordering
118 - -webkit-text-decorations-in-effect
119 - -webkit-text-fill-color
120 - -webkit-text-security
121 - -webkit-text-stroke-color
122 - -webkit-text-stroke-width
123 - -webkit-user-drag
124 - -webkit-user-modify
125 - -webkit-user-select
126 - -webkit-dashboard-region
127 - -webkit-border-bottom-left-radius
128 - -webkit-border-bottom-right-radius
129 - -webkit-border-top-left-radius
130 - -webkit-border-top-right-radius
131 - clip-path
132 - clip-rule
133 - mask
134 - filter
135 - flood-color
136 - flood-opacity
137 - lighting-color
138 - stop-color
139 - stop-opacity
140 - pointer-events
141 - color-interpolation
142 - color-interpolation-filters
143 - color-rendering
144 - fill
145 - fill-opacity
146 - fill-rule
147 - image-rendering
148 - marker-end
149 - marker-mid
150 - marker-start
151 - shape-rendering
152 - stroke
153 - stroke-dasharray
154 - stroke-dashoffset
155 - stroke-linecap
156 - stroke-linejoin
157 - stroke-miterlimit
158 - stroke-opacity
159 - stroke-width
160 - text-rendering
161 - alignment-baseline
162 - baseline-shift
163 - dominant-baseline
164 - kerning
165 - text-anchor
166 - writing-mode
167 - glyph-orientation-horizontal
168 - glyph-orientation-vertical