Open Frontier

AI-powered interactive learning. Build robots with neural networks, simulate quantum circuits, create brands with smart design tools — all free, all in your browser.

26
Stores
800+
Apps & Tools
AI
Powered
Scroll to explore

Apps & Games

Ship real software. Free tier for everyone, Pro for power users.

📱FreeAppStore144 apps
Free PWA apps that run offline. Timer, notes, weather, fitness, finance. Open source, community built, zero tracking.
ProductivityUtilitiesHealthFinance
→
🚀ProAppStore$9/mo
Server-powered apps with AI, databases, file storage, cron jobs, custom domains. One subscription unlocks everything.
AIDatabaseStorageCron
→
🎮FreeGameStore80 games
Free browser games. Chess, tetris, racing, puzzle, RPG. Multiplayer rooms, leaderboards, real-time WebSocket gameplay.
Canvas3DCardsMultiplayer
→
🏆ProGameStore$9/mo
Persistent worlds, server-authoritative multiplayer, daily challenges, cron-driven events. MMO-grade infrastructure.
RealtimeTurn-based3DPersistent
→

Interactive Simulations

148 browser-based simulations. Learn how hard things work by building them.

🦾Robotics40 sims
Control systems, SLAM, path planning, neural networks, swarm intelligence, sensor fusion. Build and train robots in your browser.
MotionSensingPlanningLearning
→
⚛️Quantum Computing25 sims
Real quantum circuits with state-vector simulation. Grover's, VQE, teleportation, error correction, annealing.
CircuitsAlgorithmsProtocolsFundamentals
→
🔗Blockchain & Crypto21 sims
Build blockchains from scratch, mine blocks, write smart contracts, simulate DeFi. Consensus algorithms visualized.
BlockchainCryptographyDeFiContracts
→
🔧Chip Design22 sims
From logic gates to full CPUs. Pipeline visualization, cache hierarchies, GPU rendering, design your own ISA.
ArchitectureDesignGPUFabrication
→
🚀Space & Orbital22 sims
Orbital mechanics, Hohmann transfers, gravity assists, rocket staging, atmospheric reentry, satellite constellations.
OrbitalPropulsionMissionsObservation
→
🧬Biology & Biotech18 sims
CRISPR gene editing, protein folding, ecosystem dynamics, enzyme kinetics, biological neural networks.
GeneticsMolecularNeuroEcology
→

Design & Marketing

Free tools to build your brand and grow your audience. No signup, no watermarks.

🎨FreeDesignStore46 tools
Photo Editor, Vector Editor, Pixel Art, Logo Maker, Tailwind Themes, CSS Animations, UI Components. Free Photoshop/Illustrator alternatives.
BrandImagesTemplatesAI-Powered
→
📣FreeMarketingStore21 tools
Campaign planner, content calendar, social post generator, SEO tools, A/B testing, personas, SWOT analysis.
CampaignsSocialContentSEO
→
💎ProDesignStore$9/mo
AI design agent, creator marketplace, encrypted key vault. Prompt-based design services with human polish.
AI AgentMarketplaceKey Vault
→
🔥ProMarketingStore$9/mo
Autonomous campaign execution. AI plans, creates content, posts to social, measures, adapts. You set the goal.
AutopilotCampaignsAnalytics
→
</>FreeCodeStore20 tools
Regex tester, JSON formatter, diff checker, API tester, JWT decoder, UUID generator. Every tool a developer needs.
FormattersTestersGeneratorsConverters
→
🎵FreeMusicStore31 tools
Beat maker, synth, DJ mixer, audio recorder, chord progressions, metronome, tuner. Make music in your browser.
ProductionDJTheoryRecording
→
📊FreeDataStore5 tools
Data profiler, cleaner, schema validator, format converter, dataset explorer. DuckDB-WASM powered SQL in browser.
SQLCSVProfilingDuckDB
→
🌐FreePeerStore10 tools
P2P in your browser. BitTorrent sim, WebRTC chat/video, CRDT editor, file sharing. Zero servers, just peers.
ProtocolsWebRTCP2P Apps
→
✍️FreeWritingStore15 tools
Essay editor, AI writing coach, screenplay formatter, readability analyzer, grammar checker, 500+ writing prompts.
WritingAnalysisGeneratorsReference
→
📚FreeBookStore12 tools
132 free classics, EPUB reader, book writer, cover designer, audiobook TTS, ISBN lookup. Powered by BePublished.
ReadWritePublishTools
→
💰FreeFinanceStore15 tools
Invoice generator, budget planner, mortgage calculator, expense tracker, currency converter. Financial tools for everyone.
BusinessPersonalCalculatorsInvesting
→

Websites & AI

AI-powered website builders and intelligent browser agents.

🌐FreeWebStore108 templates
AI-generated one-page websites for small businesses. Describe what you need, get a professional site in seconds.
Static HTMLAI GeneratedSmall Business
→
🏗️ProWebStoreCMS
Full CMS engine with knowledge-graph database, AI agent, entity modeling, themes, custom domains. WordPress-class.
CMSAI AgentEntitiesThemes
→
🤖FreeAgentStore51 tools
Browser AI tools. Libraries (evolved heuristics), Models (ONNX via Transformers.js), Agents (Chrome AI or API key).
LibrariesModelsAgents
→
⚡ProAgentStorePro tier
Server-powered AI agents with Workers AI, D1, Durable Objects, cron. Full backend AI with edge compute.
Workers AID1CronDOs
→

How It Works

No accounts. No installs. No cost. Just open and learn.

🖥️
Runs in Your Browser
No install, no signup, no download. Open any simulation and start immediately. Works on phone, tablet, desktop.
🎮
Learn by Doing
Change parameters, see results in real-time. Break things on purpose. Understanding comes from interaction, not reading.
🔓
Fully Open Source
Every simulation is a single HTML file. View source, fork it, modify it. MIT licensed. The code IS the lesson.
🤝
Community Built
Anyone can contribute a simulation. One HTML file + one PR = live on the platform. No gatekeepers, no approval queue.

Start Exploring

Pick a domain that interests you. Every free store is free forever.

Apps Games Robotics Quantum Crypto Chips Space Bio Websites AI Tools
The tools are free. The knowledge is free. What you build with them is yours.

Read our mission →