Humanizer

Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities.

http://humanizr.net/

Features:

Humanize String
Dehumanize String
Transform String
Truncate String
Format String
Humanize Enums
Dehumanize Enums
Humanize DateTime
Humanize TimeSpan
Inflector methods
Pluralize
Singularize
ToQuantity
Ordinalize
Underscore
Dasherize & Hyphenate
Fluent date
Number to words
Number to ordinal words
Roman numerals
ByteSize

MailKit

A cross-platform .NET mail client library.

https://github.com/jstedfast/MailKit

CloudConvert

Convert anything to anything.

https://cloudconvert.org/