Heytools - JavaScript tools, AJAX tools and some fully server side tools.
TitleCase - Convert text to Title Case, UPPERCASE, lowercase, CamelCase, Pascal Case, Start Case, snake_case, hyphen-case, ...
WordCounter.net - Count words, sentences, paragraphs etc.
Word Counter - A simple, beautiful word and character counter
TextBuddy for macOS - A Swiss Army knife for plain text.
Convert Case - Easily convert text between different cases: lower case, UPPER CASE, Sentence case and Capitalized...