search with regex in file line per line and replace it

High-performance regular expression matching library

My custom assembler that produces custom created (by hand) ELF file

DFA Regex Implement

Simple regex engine implementation.

Regular expression. Scaner. Parser. Compiler. Engineering a Compiler, 2nd Edition - K. Cooper, L. Torczon (2012)

Oniguruma++ (鬼車++) regular expression engine

High Performance Incremental Parser Engine

This is the "one": Linuxy infrastructureish mostly C++ code.

A Zero to One Regular expression engine which supports almost all feature except Capturing Groups, Negated Character Classes and something else.

An esoteric programming language based on Turing Machines

A Regex📋 implementation in C++ using Thompson's NFA algorithm

Lex is a Regex Engine for lexical analyzer

A regex engine based on formal automata parsing techniques.

Regex Engine using SIMD and Roaring-Bitmaps

A regular expression engine implemented with virtual machine approach. Python wrapper provided.

The original timed regular expression matcher over temporal behaviors

R interface to Google re2 (C++) regular expression engine

Yet another high-performance C++ regex library and lexical analyzer generator like Flex: 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.