Life & fun · alternatives · 2026
24 alternatives to Simulations Labs
Easiest Platform to Launch Cybersecurity Simulations
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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CTFGuide▲79CTFGuide provides tools to teach and learn cybersecurity
2021 · ctfguide.com · its alternatives →
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Agent Simulate▲413Test your AI apps with thousands of digital humans
2025 · agentsimulate.com · its alternatives →
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Agent Arena▲348Creator here. I built Agent Arena to answer a question that kept bugging me: when AI agents browse the web autonomously, how easily can they be manipulated by hidden instructions? How it works: 1. Send your AI agent to ref.jock.pl/modern-web (looks like a harmless web dev cheat sheet) 2. Ask it to summarize the page 3. Paste its response into the scorecard at wiz.jock.pl/experiments/agent-arena/ The page is loaded with 10 hidden prompt injection attacks -- HTML comments, white-on-white text, zero-width Unicode, data attributes, etc. Most agents fall for at least a few.…
Jun 2026 · arena42.ai · its alternatives →
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Replicas▲239Hey HN! I'm Connor, creator of Replicas. I'm a heavy Codex/Claude Code user, and I wanted to hand off tasks to agents like I would to an engineer - kick something off before work, let it scaffold while I'm at lunch, even come back to a ready PR. The problem: existing alternatives use workspace VMs that are black boxes. I have no access to any of them - they can't run tests, read logs, or use tools like the Playwright MCP (which I use to verify agents actually fixed what they claim to fix). Replicas gives agents real cloud workspaces where they can: - Run your test suite and read the…
Jun 2026 · replicas.dev · its alternatives →
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Learn Cyber Security Easily from the cloud! How to Hack.
2018 · tryhackme.com · its alternatives →
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SecuSpark▲78Turn boring cert exams into a MMORPG with boss fights
Apr 2026 · secuspark.com · its alternatives →
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Learn the skills cybersecurity pros actually use
May 2026 · defendtheorg.com · its alternatives →
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We build runtime security for AI agents. The playground started as an internal tool that we used to test our own guardrails. But we kept finding the same types of vulnerabilities because we think about attacks a certain way. At some point you need people who don't think like you. So we open-sourced it. Each challenge is a live agent with real tools and a published system prompt. Whenever a challenge is over, the full winning conversation transcript and guardrail logs get documented publicly. Building the general-purpose agent itself was probably the most fun part. Getting it to reliably use…
Mar 2026 · github.com · its alternatives →
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ContraForce▲98The Cybersecurity Management Platform for Startups & SMBs
2021 · contraforce.com · its alternatives →
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I am a solo developer, and I built Core MBA because I was frustrated with the "video course" default in business education. I wanted to build a "compiler for business logic"—a tool where I could read a concept in 5 minutes and immediately test it in a hostile environment to see if my strategy actually compiles or throws a runtime error. The project is a business simulator built on React 19 and TypeScript. The core technical innovation isn't just using AI; it's the architecture of a closed loop between a deterministic economic engine and a generative AI validation layer. The biggest technical…
Jan 2026 · core-mba.pro · its alternatives →
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2016 · hackcha.in · its alternatives →
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Pwned Labs▲86The ultimate cybersecurity training ground for all levels
2023 · pwnedlabs.io · its alternatives →
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Master cybersecurity with hands-on courses by industry experts. Learn pentesting, ethical hacking, and SOC operations through real challenges.
Jan 2026 · academy.subverted.io · its alternatives →
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CourseStack▲11The only LMS with VMs, Code Workspaces and Jupyter Notebooks
Nov 2025 · coursestack.com · its alternatives →
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ByteCTF▲6A Begginer Friendly CTF Platform For Hackers
2025 · bytectf.netlify.app · its alternatives →
- 23AC
Hello HN, given the recent interest in the security vulnerabilities of agentic LLM apps, we would love to hear everyone's thoughts on a Capture The Flag (CTF) challenge we built. The challenge is designed to test the robustness of LLM-based agent systems, showcasing how an attacker can extract sensitive information from the system. The challenge is part of the Invariant Summer '24 CTF series, where participants can play the challenge and compete for a prize pool of $1000. Let us know what you think and what attacks you tried. We are also open to any feedback on how we can improve with the…
2024 · its alternatives →
- 24BS
2015 · backdoor.sdslabs.co · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →