B Systems designs, builds, and scales a growing family of focused, privacy-first products — on our own runtime. Global. Estonian. Owned, not rented.
Fragment Architecture is our own way of making software — five layers, top to bottom. It's why our products carry no JavaScript runtime, no npm supply chain, and no rented platform. The moat isn't a website; it's the technology beneath every one of them.
The structural language products are written in — describing what a product is as fragments, not step-by-step code. Declarative, composable, and auditable by design.
Our own compiler turns fragment definitions straight into native binaries — no JavaScript build chain, no dependency graph to poison. Part of the sovereign stack.
Products persist and ship as compact .mfg binaries — portable, verifiable, and fully owned. No database sprawl, no cloud you can't leave.
The native, no-JSON protocol our fragments speak — a binary transport with no REST/JSON attack surface and no serialization tax.
A tiny, dependency-free native runtime that serves fragments directly as production apps. No V8, no Node — a fraction of the footprint and a far smaller attack surface.
Anyone can ship a product. Our advantage is the machine that builds and scales many of them in parallel — a distribution multiplier, not a single bet.
A sovereign runtime and a production system that turns an idea into a live, polished product in hours — not quarters. No JavaScript runtime exposed, no npm supply chain, no bloat.
One inbound engine — content, lead magnets, capture, and nurture — runs across the entire portfolio at once. Every product compounds the same distribution machine.
Every product runs on our own stack, on infrastructure we control. No rented platforms, no surveillance, no lock-in. The moat is the machine and the data — never a single site.
Every day more of your money, your data, and your decisions flow into systems you don't control. B Systems is built the other way — on principles, not exceptions.
Work with us →Zero third-party advertising trackers, ever. Your information is never the product.
No exposed JavaScript runtime, no npm dependency graph, no arbitrary code execution paths — a fundamentally smaller attack surface.
We run our own infrastructure end to end. No platform can change the rules on us — or on you.
Declarative products with no hidden data paths. What you see is what runs.
Real, live products — built across finance, productivity, education, wellbeing and business, all on the same sovereign stack. Filter to explore.
A selection of what's live — 150+ products and counting across the portfolio.
Partnerships, licensing, and press. If you're building toward the same thing, let's talk.
hello@b-systems.ee