Best 3GL Alternatives & Competitors in 2026

CAI (Cybersecurity AI)

An open-source framework that enables building and deploying AI security tools

Havoc Framework

Open-source C2 framework for red team ops and adversary simulation.

Darkarmour

Darkarmour is an open-source Windows antivirus evasion framework that enables security professionals to bypass antivirus detection through customizable obfuscation and anti-analysis techniques.

InvisibilityCloak

InvisibilityCloak is a proof-of-concept C# code obfuscation toolkit designed for red teaming and penetration testing to conceal post-exploitation tools from detection.

Modlishka

Modlishka is a reverse proxy tool for intercepting and manipulating HTTP traffic, ideal for penetration testers, security researchers, and developers to analyze and test web applications.

PwnAuth

PwnAuth is an open-source tool for generating and managing authentication tokens across multiple protocols, designed for penetration testing and red team exercises.

RedGuard

RedGuard is a C2 front flow control tool that helps evade detection by security systems through traffic filtering and redirection capabilities.

SharpC2

SharpC2 is a C#-based Command and Control framework that provides remote access capabilities for penetration testing and red team operations.

delete-self-poc

A demonstration of a method to delete a locked executable or currently running file from disk.

Red Teaming Toolkit

A comprehensive repository of open-source security tools organized by attack phases for red team operations, adversary simulation, and threat hunting purposes.

Thinkst Canarytokens Detector and Diffuser/Nullifier

A Python script that detects and removes Thinkst Canary Tokens from files using signature-based detection methods.

mach_inject

A Mac OS X code injection library that enables copying code into target processes and remotely executing it through new thread creation.

CloudFox

CloudFox is an open source command line tool that helps penetration testers and offensive security professionals identify exploitable attack paths and gain situational awareness in cloud infrastructure environments.

Empire Communication Profiles

Customize Empire's GET request URIs, user agent, and headers for evading detection and masquerading as other applications.

Shadow Workers

Shadow Workers is an open source C2 framework and proxy tool for penetration testers to exploit XSS vulnerabilities and malicious Service Workers.

Trickest Attack Surface Management

Platform for offensive security operations including ASM, VA, and DAST

Fortra Cobalt Strike

Threat emulation tool for adversary simulations and red team operations

GoSecure Titan® Adversarial Simulation

Human-led adversary emulation service testing detection & response capabilities

Core Security Cobalt Strike

Post-exploitation threat emulation platform for red team operations.

Core Security Outflank Security Tooling

Red team toolkit for EDR evasion, initial access, and post-exploitation.

Core Security Bundles and Suites

Bundled offensive security suites combining pen testing, red teaming, and VM.

Dreadnode Offensive Security Agents

AI agent platform for automating offensive security operations and evals.

Ethiack

AI-powered continuous pentesting platform combining autonomous agents with human hackers.

NSO Group

Govt-focused cyber intelligence & surveillance software provider.

REDLattice

AI-assisted vulnerability research and advanced offensive cyber tooling firm.

Feisty Fox Security

Boutique security firm offering red team, OSINT, and adversary simulation services.

Red Specter Cheatsheet

CLI cheatsheet for Red Specter's 30-tool offensive security platform.

Asgard Cyber Security

Boutique cybersecurity firm offering pentesting, consulting, and DFIR services.

A Security

Autonomous offensive security platform that finds, validates, and remediates attack paths.

KinoSec Hades

Autonomous AI offensive cyber platform for sovereign-grade threat neutralization.

HexStrike AI MCP Agents

MCP server enabling AI agents to autonomously run 150+ security tools

Cobalt Strike's ExternalC2 framework

A specification/framework for extending default C2 communication channels in Cobalt Strike

Impacket

A Python library for working with network protocols

GraphSpy

GraphSpy is a browser-based post-exploitation tool for Azure Active Directory and Office 365 environments that enables token management, reconnaissance, and interaction with Microsoft 365 services.

MITRE Caldera™

MITRE Caldera™ is an automated adversary emulation platform built on the MITRE ATT&CK framework that supports red team operations and incident response activities through a modular C2 server and plugin architecture.

WebDAV Covert Channel

A covert channel technique that uses WebDAV protocol features to deliver malicious payloads and establish C2 communication while bypassing security controls.

pybof

PyBOF is a Python library that enables in-memory loading and execution of Beacon Object Files (BOFs) with support for argument passing and function targeting.

xargs

A command that builds and executes command lines from standard input, allowing for the execution of commands with multiple arguments.

AggressiveProxy

Tool for enumerating proxy configurations and generating CobaltStrike-compatible shellcode.

Seatbelt

Comprehensive host-survey tool for security checks in C#.

SharpEDRChecker

SharpEDRChecker scans system components to detect security products and tools.

Kali

Kali Linux is a specialized Linux distribution for cybersecurity professionals, focusing on penetration testing and security auditing.

RedELK

RedELK is a SIEM tool designed for red teams to monitor and receive alerts about blue team detection activities during penetration testing engagements.

RedEye

RedEye is a visual analytic tool that provides enhanced situational awareness and operational insights for both Red and Blue Team cybersecurity operations.

AzureC2Relay

An Azure Function that validates and relays Cobalt Strike beacon traffic based on Malleable C2 profile authentication.

Brute Ratel C4

Advanced command and control tool for red teaming and adversary simulation with extensive features and evasion capabilities.

C2concealer

A command line tool that generates randomized malleable C2 profiles for Cobalt Strike to vary command and control communication patterns.

C3

C3 is a framework by WithSecureLabs for rapid prototyping of custom command and control channels that integrates with existing offensive security toolkits.