Common Regex Snippets. Used for my github gist plugin in Sublime Text. It let's me fetch gists and put them in the clipboard.

common-regex-snippets.txt

Select Attribute (style in this case)
style\s*=\s*('|")(.*)('|")

Find Double Words (<the the> file)
\b(\w+)\b \1

HTML Tags - specific
<TAG\b[^>]*>(.*?)</TAG>

HTML Tags - vague
^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$

Emails
^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$

HEX codes
^#?([a-f0-9]{6}|[a-f0-9]{3})$

Slug (this-is-a-slug)
^[a-z0-9-]+$

URL
^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$