Delivers exceptional UI generation and full-stack app creation, but focuses less on traditional multi-language code editing than Replit.
#1Fabraix records 3,051 monthly visits with +15.4% month-over-month growth and Freemium, Contact for Pricing pricing. Replit records 10,016,437 monthly visits with -7.7% growth and Freemium, Paid pricing.

Our agents hack your AI before attackers do
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | fabraix.com | replit.com |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Paid |
| Monthly Visits | 3.05K (3,051) | 10.02M (10,016,437) |
| MoM Traffic Delta |
| +407 (+15.4%) |
| -833.88K (-7.7%) |
| Primary Market & Share | 🇨🇦 Canada (100%) | 🇺🇸 United States (33.4%) |
|---|
| Direct Visits / mo | 1.21K | 6.14M |
|---|
| User Rating | 4.4 | 4.5 |
|---|
| Supported Platforms | Website | Website |
|---|

Our agents hack your AI before attackers do
Point Nyx at any AI system with no integration or internal access — test agents exactly how real users interact with them.
Nyx reasons across turns and adapts to your agent's logic, drawing on 10,000+ offensive strategies in long-context campaigns instead of canned prompts.
Test across voice, text and images, with websites deployed on the fly for browser agents and custom files for document-processing agents.
Run thousands of concurrent simulations; coverage scales with compute rather than headcount, with first exploits often found in under an hour.

Describe your idea and Replit builds a working app in minutes
Describe the product you want and the agent plans, codes, tests and iterates on a working full-stack application.
Authentication, databases, hosting and monitoring work out of the box, so apps scale without separate DevOps work.
A no-cost mode lets you brainstorm and build without spending tokens before upgrading to stronger models.
Connect services such as OpenAI, Stripe and Google Workspace in minutes rather than writing glue code.
Delivers exceptional UI generation and full-stack app creation, but focuses less on traditional multi-language code editing than Replit.
#1
Provides a powerful AI-native desktop code editor for professional developers, but lacks Replit's instant browser-based cloud hosting deployment.
SpecialistProvides advanced agentic parallel coding workflows, but functions as a dedicated desktop/CLI environment rather than Replit's all-in-one cloud workspace.
#3
Converts natural language into functional web apps quickly, but provides less traditional terminal access and multi-language support than Replit.
Builds and hosts web applications conversationally, but has a less established developer ecosystem and package management suite than Replit.
SpecialistA spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
Generates full-stack web applications directly in the browser from prompts, but lacks Replit's robust persistent cloud workspace infrastructure.
Specializes in rapid generative UI and component creation, but offers less comprehensive full-stack server and database management than Replit.

Instantly builds and hosts full-stack apps with integrated databases, but offers less granular terminal-level control than Replit.

A full-stack, browser-based AI workspace for building apps

AI security platform that finds exposures, proves they're exploitable, and ships the fix


Attack-led AI security testing and red teaming
Delivers exceptional UI generation and full-stack app creation, but focuses less on traditional multi-language code editing than Replit.
Provides a powerful AI-native desktop code editor for professional developers, but lacks Replit's instant browser-based cloud hosting deployment.
SpecialistProvides advanced agentic parallel coding workflows, but functions as a dedicated desktop/CLI environment rather than Replit's all-in-one cloud workspace.
Converts natural language into functional web apps quickly, but provides less traditional terminal access and multi-language support than Replit.
Builds and hosts web applications conversationally, but has a less established developer ecosystem and package management suite than Replit.
SpecialistA spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
Generates full-stack web applications directly in the browser from prompts, but lacks Replit's robust persistent cloud workspace infrastructure.
Specializes in rapid generative UI and component creation, but offers less comprehensive full-stack server and database management than Replit.
Instantly builds and hosts full-stack apps with integrated databases, but offers less granular terminal-level control than Replit.
AI security platform that finds exposures, proves they're exploitable, and ships the fix
Attack-led AI security testing and red teaming