With this C# regex, you can easily match/Parse Nested HTML tags. Example input: ...

Validates subdomain, root domain, and wild card domains

Extract URL parts only named capturing groups

Match any layer bracket pair

Checks validity of an EA number first two digits 01-12 followed by hyphen then a number from 0-4 and then 4 numbers or uppercase letters and ending in a 1 or 4 for example "05-1J7601". Adding a capital C to the beginning is also accepted "C05-1J7601", along with the entry of 2 X's hyphen and 6 X's ...

.Net regular expression for resolving placeholders in the format of ${rewriter(multilevel:key)?fallback} (+ variations)

Matches subdomain, domain and top level in a field that contains a urls. https://www.whatever.you.want ---> whatever.you.want

Regex expression for comparing decimal numbers with the usual comparison operators such as (greater than), >= (greater than or equal to), != (not equal to), == (equal to), ... The regex also allows filtering of data from e.g. a database, whereby the first value is not needed, e.g. [FIELD] < 100

^(((\d{3}[1-9]|\d{2}[1-9]\d|\d[1-9]\d{2}|[1-9]\d{3})(\/)(((0[13578]|1[02])(\/)(0[1-9]|[12]\d|3[01]))|((0[469]|11)(\/)(0[1-9]|[12]\d|30))|(02(\/)(0[1-9]|[1]\d|2[0-8]))))|(((\d{2})(0[48]|2468|13579)|((0[48]|2468|3579)00))(\/)02(\/)29))$ Match year/month/day, date format. E.g: 2021/08/25 [match] 2021/...

Parses the text following a '#' and a space all the way up to the next return character. Additional #'s can be added for parsing of other type of headings!

Regex to select PlantUML Block in Asciidoc documents

Group 1 will have meeting id, group 2 will have password

Replace sub-strings in string

Phone number for all countries. Valid symbols: ( ), -, whitespace

Get ip address (only ipv4) Validator

validates against multiple common formats

Matches protocol, domain, port, path, query and anchor as named capturing groups.

Matching for mikrotik ROS 7 Used in promtail and grafana

Regular expression to check the email syntax validity. Certainly requires improvement, but it's a good basis to work from. Work with Java and JavaScript.

Case insensitive match the whole word betwween \bword\b