Best external_c2 framework Alternatives & Competitors in 2026
Top picks: SILENTTRINITY, Fortra Cobalt Strike, Core Security Cobalt Strike — plus 45 more compared.
Security OperationsTop picks: SILENTTRINITY, Fortra Cobalt Strike, Core Security Cobalt Strike — plus 45 more compared.
Security Operationsexternal_c2 framework is a free Offensive Security tool. Security professionals most commonly compare it with SILENTTRINITY, Fortra Cobalt Strike, Core Security Cobalt Strike, Core Security Outflank Security Tooling, and Dreadnode Offensive Security Agents. All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.
A closer look at the 8 most relevant alternatives and competitors to external_c2 framework, including their key features and shared capabilities.
SILENTTRINITY is a Python-based, asynchronous C2 framework that uses .NET scripting languages for post-exploitation activities without relying on PowerShell.
Shares 3 capabilities with external_c2 framework: C2, Red Team, Exploitation Framework
Threat emulation tool for adversary simulations and red team operations
Post-exploitation threat emulation platform for red team operations.
Red team toolkit for EDR evasion, initial access, and post-exploitation.
AI agent platform for automating offensive security operations and evals.
CLI cheatsheet for Red Specter's 30-tool offensive security platform.
A covert channel technique that uses WebDAV protocol features to deliver malicious payloads and establish C2 communication while bypassing security controls.
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.
SILENTTRINITY is a Python-based, asynchronous C2 framework that uses .NET scripting languages for post-exploitation activities without relying on PowerShell.
Threat emulation tool for adversary simulations and red team operations
Post-exploitation threat emulation platform for red team operations.
Red team toolkit for EDR evasion, initial access, and post-exploitation.
AI agent platform for automating offensive security operations and evals.
CLI cheatsheet for Red Specter's 30-tool offensive security platform.
A covert channel technique that uses WebDAV protocol features to deliver malicious payloads and establish C2 communication while bypassing security controls.
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.
An Azure Function that validates and relays Cobalt Strike beacon traffic based on Malleable C2 profile authentication.
Advanced command and control tool for red teaming and adversary simulation with extensive features and evasion capabilities.
A command line tool that generates randomized malleable C2 profiles for Cobalt Strike to vary command and control communication patterns.
C3 is a framework by WithSecureLabs for rapid prototyping of custom command and control channels that integrates with existing offensive security toolkits.
CobaltBus integrates Cobalt Strike with Azure Service Bus to create covert C2 communication channels for red team operations.
Covenant is a collaborative .NET command and control framework designed for red team operations and offensive security engagements.
CrossC2 is a cross-platform payload generator that extends CobaltStrike's capabilities to Linux and macOS environments for red team operations.
A reconnaissance tool that analyzes expired domains for categorization, reputation, and Archive.org history to identify candidates suitable for phishing and C2 operations.
Havoc is a malleable post-exploitation command and control framework that provides a client-server architecture with payload generation, customizable C2 profiles, and team collaboration capabilities for red team operations.
A COM Command & Control framework that uses JScript to provide fileless remote access capabilities on Windows systems through a modular plugin architecture.
A cross-platform HTTP/2 Command & Control framework written in Golang for post-exploitation activities and remote system management.
A lightweight Command and Control (C2) implant written in Nim that provides remote access capabilities for penetration testing and red team operations.
A proxy aware C2 framework for penetration testing, red teaming, post-exploitation, and lateral movement with modular format and highly configurable payloads.
Pupy is an open-source, cross-platform C2 framework that provides remote access and control capabilities for compromised systems across Windows, Linux, OSX, and Android platforms.
RedGuard is a C2 front flow control tool that helps evade detection by security systems through traffic filtering and redirection capabilities.
RedWarden is a Cobalt Strike C2 reverse proxy that uses packet inspection and malleable profile correlation to evade detection by security controls during red team operations.
SharpC2 is a C#-based Command and Control framework that provides remote access capabilities for penetration testing and red team operations.
SourcePoint generates customizable C2 profiles for Cobalt Strike servers to enhance evasion capabilities against security defenses.
A cross-platform post-exploitation HTTP/2 Command & Control framework designed specifically for testing and exploiting containerized environments including Docker and Kubernetes.
Customize Empire's GET request URIs, user agent, and headers for evading detection and masquerading as other applications.
Tool for randomizing Cobalt Strike Malleable C2 profiles to evade static, signature-based detection controls.
FourCore ATTACK is an adversary emulation platform to manage cyber risk with evidence
Bundled offensive security suites combining pen testing, red teaming, and VM.
MCP server enabling AI agents to autonomously run 150+ security tools
A specification/framework for extending default C2 communication channels in Cobalt Strike
LeakIX is a red-team search engine that indexes mis-configurations and vulnerabilities online.
Parrot Security OS is a comprehensive, secure, and customizable operating system for cybersecurity professionals, offering over 600+ tools and utilities for red and blue team operations.
A command that builds and executes command lines from standard input, allowing for the execution of commands with multiple arguments.
Tool for enumerating proxy configurations and generating CobaltStrike-compatible shellcode.
RedELK is a SIEM tool designed for red teams to monitor and receive alerts about blue team detection activities during penetration testing engagements.
EvilClippy is a cross-platform tool that creates malicious MS Office documents with hidden VBA macros and evasion techniques for penetration testing and red team operations.
A template-driven framework for creating custom evasion techniques to test Anti-Virus and EDR detection capabilities.
A tool for working with Direct System Calls in Cobalt Strike's Beacon Object Files (BOF) for offensive security purposes.
InvisibilityCloak is a proof-of-concept C# code obfuscation toolkit designed for red teaming and penetration testing to conceal post-exploitation tools from detection.
Ivy is a payload creation framework for executing arbitrary VBA source code directly in memory, utilizing programmatical access to load, decrypt, and execute shellcode.
Macro_Pack automates the generation and obfuscation of Office documents and scripts for penetration testing and security assessments.
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.
Mortar is an evasion technique to defeat and divert detection and prevention of security products, including AV, EDR, and XDR solutions.
MSBuildAPICaller is an offensive security tool that enables interaction with the MSBuild API to execute arbitrary scripts for red teaming and penetration testing purposes.
A macOS Initial Access Payload Generator for penetration testing and red teaming exercises.
Common questions security professionals ask when evaluating alternatives and competitors to external_c2 framework.
The most popular alternatives to external_c2 framework include SILENTTRINITY, Fortra Cobalt Strike, Core Security Cobalt Strike, Core Security Outflank Security Tooling, and Dreadnode Offensive Security Agents. These Offensive Security tools offer similar capabilities and are frequently compared by security professionals evaluating their options.
