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Accessibility
SENTINEL TOOLS
DOMAIN HUB
Accessibility
Contrast and accessibility checkers grounded in WCAG — free, cited, no sign-up.
W3C WCAG 2.1 / 2.2
2
Tools in hub
105
In full suite
$0
Cost, always
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105
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2
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15
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5
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6
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10
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10
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9
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5
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4
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3
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3
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1
Other domains
Freight & logistics
15
Hazmat & dangerous goods
5
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6
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10
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10
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9
Weather & sky
5
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4
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3
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3
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71