Useful software and hard knowledge, open to everyone.
Open Frontier is a family of browser-based tools, apps, games, AI utilities, website builders, and interactive simulations. Most free experiences require no account or install. Open one and start using it.
Honest status: Open Frontier is an actively built, pre-revenue ecosystem. Some products are production-grade, some are beta, and some Pro storefronts are previews. Every catalog entry below identifies its current maturity.
Start with your question
The project serves several audiences. These paths explain what exists, what it costs, how decisions are made, and where help is needed.
For users
Find free tools and simulations, understand accounts and data handling, and choose the right store.
Browse products →For contributors
Learn the repository model, contribution standards, review expectations, licensing, and good first contributions.
Contribution guide →For stakeholders
Review maturity, economics, architecture, risks, roadmap, success measures, and current asks.
Project brief →For evaluators
Get direct answers about pricing, security, privacy, education, commercial use, AI, and sustainability.
Read all answers →Interactive simulations
Manipulate real concepts instead of only reading about them. These six live stores contain 166 self-contained simulations.
Robotics
Live44 simulations covering kinematics, control, planning, sensing, SLAM, and neuroevolution.
Quantum computing
Live27 simulations for qubits, gates, algorithms, teleportation, annealing, and error correction.
Crypto systems
Live25 educational simulations for blockchains, consensus, cryptography, smart contracts, and DeFi.
Chip design
Live26 simulations from logic gates and ALUs through pipelines, caches, GPUs, and CPU architecture.
Space systems
Live24 simulations for orbital mechanics, transfers, propulsion, reentry, missions, and constellations.
Biology
Live20 simulations spanning genetics, CRISPR, protein folding, enzyme kinetics, ecology, and neural systems.
Practical browser tools
Focused tools for creative, technical, and business work. Core functionality runs in the browser; individual tools may use local storage or optional external APIs.
Design
LiveLogo, image, vector, palette, UI, template, and CSS tools with exportable results.
Marketing
LiveCampaign planning, content, social, SEO, testing, persona, and research utilities.
Code
LiveFormatters, testers, converters, generators, API tools, and developer references.
Music
LiveProduction, synthesis, recording, DJ, rhythm, ear training, and music theory tools.
Writing
LiveEditing, analysis, formatting, prompts, outlining, and optional AI-assisted writing tools.
Books
LivePublic-domain reading plus EPUB, writing, cover, publishing, lookup, and audio utilities.
Finance
LiveInvoices, budgets, expenses, mortgages, currencies, calculators, and planning tools.
Data
Small catalogProfile, clean, validate, convert, query, and explore datasets directly in the browser.
Peer-to-peer
BetaExplore WebRTC, CRDTs, file transfer, collaboration, and distributed protocols.
Your browser can become a guided OFO workspace.
OFO is building a browser companion that helps users understand stores, create crash courses, move across tools, and connect with relevant communities. The same browser-tool contract can let approved AI clients invoke local OFO tools safely.
Learn in context
Create a crash course for a topic, then get guidance while using the relevant OFO simulations, tools, and docs.
Do the next step
Turn a goal into an OFO workflow: choose the right store, use the right tool, review the output, and publish when ready.
Connect with people
Find relevant communities, peers, mentors, contributors, reviewers, and professionals through explicit opt-in matching.
Apps, games, websites, and AI
The platform product lines provide storefronts, creation workflows, hosting, SDKs, and optional server-backed capabilities. Maturity varies by product.
FreeAppStore
ProductionInstallable web apps with publishing infrastructure, SDK services, compliance checks, and GitHub-based creation.
FreeGameStore
Post-betaBrowser games with templates, quality automation, leaderboards, and lightweight multiplayer capabilities.
FreeWebStore
ProductionAI-assisted one-page websites for small businesses, built from a large niche-template catalog.
FreeAgentStore
Early betaBrowser AI libraries, local models, and agents using WebGPU, WASM, built-in AI, or user-authorized APIs.
FreeIdeaStore
BetaPublic idea lab where raw ideas are submitted, critiqued, researched, supported, pivoted, parked, or promoted.
ProAppStore
Production coreServer-backed apps with mature SDK, database, storage, AI, scheduling, domains, and marketplace infrastructure.
ProWebStore
PivotingA knowledge-graph CMS with AI operation, structured entities, relationships, media, and multi-page rendering.
ProIdeaStore
PreviewCurated opportunity dossiers for ideas that need diligence, validation, prototype scope, risk memos, and build readiness.
Preview products: FreeIdeaStore and ProIdeaStore are newly deployed on Worker preview URLs while custom domains are pending. ProGameStore is scaffold-stage. ProAgentStore is early beta. ProDesignStore and ProMarketingStore have storefront and backend scaffolding but are not complete public services. They are documented as roadmap work, not presented here as finished products.
A simple public promise
Use without friction
Most free tools and simulations open immediately. Some platform services use accounts only where identity, publishing, synchronization, or billing genuinely requires one.
Keep browser work local
Static tools are designed to process data on-device where practical. Optional AI or network features clearly depend on the browser, a user-provided key, or an external service.
Inspect and improve
Free-store projects follow an open-source, GitHub-based contribution model. Many experiences are intentionally self-contained so contributors can understand them quickly.
Pay only for server value
The intended Pro model funds capabilities that require persistent infrastructure: hosted AI, databases, storage, scheduled jobs, collaboration, and custom domains.
State maturity honestly
Live, beta, preview, and planned work are different. The public site and stakeholder brief identify those states instead of treating the whole ecosystem as equally complete.
Build a contributor path
The long-term goal is a community-maintained catalog where domain experts, educators, designers, and engineers can each improve a focused part.
What product status means
A public URL does not automatically mean a product is mature, supported, or ready for critical work.
Production
The core workflow is deployed, tested, and actively operated. It can still change, and free services do not carry an uptime SLA.
Beta
The product works and is available for evaluation, but interfaces, reliability, catalog quality, and data handling may still change.
Preview or scaffold
Useful portions exist, but the end-to-end service is incomplete. A polished storefront is not evidence that every advertised workflow is operational.
Explore, evaluate, or contribute.
Use the catalog now. Read the project brief if you are evaluating the ecosystem. Read the contribution guide if you want to improve a tool, simulation, platform, or explanation.