The Fast Lexical Analyzer - scanner generator for lexing in C and C++

Create ridiculously fast Lexers

DFA regular expression library & friends

The fast scanner generator for Java™ with full Unicode support

BNF Converter

A high-performance C++ regex library and lexical analyzer generator with Unicode support. Extends Flex++ with Unicode support, indent/dedent anchors, lazy quantifiers, functions for lex and syntax error reporting and more. Seamlessly integrates with Bison and other parsers.

a parser and lexer generator as a Rust procedural macro

a C# embeddable lexer and parser generator (.Net core)

A lexical analyser generator for Haskell

Generates generalised LL (GLL) and reduced size LR(1) parsers with matching lexers

Lexer Generator and Parser Generator as a Library in Nim.

Fast lexer code generator for Rust

clex is a simple lexer generator

A fully-featured lexer generator, implemented as a proc macro

Tools for building compilers, interpreters, and analysis tools in F#

The Parser Construction Kit ("Puck"): A Parser Generator and Grammar Translator in C#

Generic tokenizer written in Nim language 👑 Powered by std/lexbase and Nim's Macros

A multiparadigm language intended to be embedded in .NET applications or compiled into other languages like Python or PHP. The internals of Aphid are clean and easy to work with, allowing for rapid creation of derivative domain-specific languages.

Configurable lexer for PHP featuring a fluid API.

Flex-compatible lexer generator for Go