# Caido

Caido is a Penetration Testing product. It runs on-premises. Pricing is free.

A lightweight web security auditing toolkit that simplifies security tasks and enhances productivity.

Checked October 2026.

## What is Caido?

Classic Meets Cutting-Edge
We’ve taken the tools you rely on and enhanced them to simplify your security tasks, making your workday more productive and less complicated.

InterceptProxy and view HTTP requests in real-time as you browse
ReplayResend existing and custom requests to manually test endpoints
AutomateCustomize and test requests against large wordlists
SitemapGet a real-time visualization of your website's structure
Match & ReplaceAutomatically modify incoming requests with regex rules
ConvertCreate your own custom encoders/decoders
Plugins, SimplifiedExtending your tool doesn't have to be painful. Our workflow system allows you to customize Caido with minimal code required.

Tags: Web Security

## Where it fits in your security program (NIST CSF 2.0)

- [Protect](https://cybersectools.com/guides/building-protect-program-small-team): helps you prevent attacks and keep data safe.

## Quick facts

- Category: [Offensive Security](https://cybersectools.com/categories/offensive-security-testing) · [Penetration Testing](https://cybersectools.com/categories/pentesting-tools)
- Deployment: On-Premises
- Company size fit: Startup, SMB, Mid-Market
- Pricing model: Free
- Website: caido.io

## Caido FAQ

### What is Caido?

Caido is a product in the Penetration Testing category. It covers Web Security.

### What is the pricing for Caido?

Caido is free. Download and setup instructions are at https://caido.io/.

### What are alternatives to Caido?

Alternatives to Caido listed on CybersecTools:

1. [Redpoint Assessment Services](https://cybersectools.com/tools/redpoint-assessment-services) - Manual application security assessments and secure code review services (Commercial)
2. [Web Application Penetration Testing​](https://cybersectools.com/tools/web-application-penetration-testing) - Real-world web app testing to uncover logic flaws, access gaps, and hidden risks. (Commercial)
3. [Novee AI Pentesting](https://cybersectools.com/tools/novee-ai-pentesting) - AI-driven continuous penetration testing platform with automated remediation. (Commercial)
4. [Tenzai](https://cybersectools.com/tools/tenzai) - Agentic AI platform for continuous, autonomous penetration testing of enterprise apps. (Commercial)
5. [Capture The Bug PTaaS](https://cybersectools.com/tools/capture-the-bug-ptaas) - CREST-certified PTaaS platform for continuous web, API, and cloud pentesting. (Commercial)

Compare all Caido alternatives at [https://cybersectools.com/alternatives/caido](https://cybersectools.com/alternatives/caido)

### What deployment and organization size does Caido fit?

Caido is available as on-premises software. It is listed for startups, small businesses and mid-market companies. It is free.

## Compare Caido with similar solutions

- [Caido vs Redpoint Assessment Services](https://cybersectools.com/compare/caido-vs-redpoint-assessment-services)
- [Caido vs Web Application Penetration Testing​](https://cybersectools.com/compare/caido-vs-web-application-penetration-testing)
- [Caido vs Novee AI Pentesting](https://cybersectools.com/compare/caido-vs-novee-ai-pentesting)

All alternatives to Caido: [/alternatives/caido](https://cybersectools.com/alternatives/caido)

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Source: https://cybersectools.com/tools/caido

For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any compare page has a Markdown copy too (add .md to its URL).

More on Caido: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=product-md