The Product · ROSA
ROSA is development infrastructure and tools, one product: your team builds the system, tests it on real hardware, proves it with evidence from real records, and steers the whole portfolio. Everything lands in your repos, your CI, your infrastructure, as your code.
One product
Four jobs, one product. ROSA carries the work that is nearly the same in every connected product, so your team's time goes into what makes yours different.
Build
Model your product explicitly: hardware target, modules, how they communicate. ROSA generates the system code deterministically and brings ready-made, maintained modules plus managed Zephyr and Linux.
Test
Author tests without ceremony, run them in emulation or on your hardware benches, see results in the CI you already run, and gate releases on facts.
Prove
Compliance evidence as a by-product of building: a live SBOM per build, CVE handling with recorded evidence, exportable packs per release. Evidence readiness for the CRA, from the first build.
Steer
Status, forecasts, and policy adherence derived from what actually ran, never written by hand. Management and engineering look at the same records.
A fair question
The open base is genuinely good, and ROSA builds on it instead of replacing it. Here is the honest division of labour: what the free pieces give you, and what still has to be built for every product.
The open RTOS (mainline Zephyr) and embedded Linux
Kernel, scheduler and threads, drivers, protocol stacks: BLE, Matter, CAN, HTTP. Free and mature.
The hardware vendor SDK
The same, packaged for that vendor's silicon: board support, drivers, examples. Also free.
What remains for your team, without ROSA
Application structure, how components communicate, hardware configuration, the security and update system, the test setup, toolchain and CI, compliance evidence. And your product logic.
What remains for your team, with ROSA
Your product logic. The rest arrives as maintained modules, templates, deterministic generation, and tooling, and we keep the OS base current, secure, and compliant.
Nothing is forked and nothing is replaced: ROSA builds on mainline Zephyr and Linux, and we keep that base current so your team does not have to.
Build · your model
You define what your product is, in an explicit model. ROSA generates the system around your code deterministically: reviewable, repeatable, never a guess.
The system designer: hardware target, patterns, modules, and the topics that wire them. One editor, one model. The graph updates as you configure it and can never drift from what actually gets generated.
The product model lives in a single type-safe configuration: your hardware target, the modules that make up your application, and how they communicate. Configuration errors are caught at translation time, before your compiler ever sees the code.
Modules never reference each other directly. All communication goes through generated, typed interfaces on named topics: publish/subscribe or request/response, enforced by architecture rather than convention. When hardware changes, the transport changes. The interface does not.
The result is a clean separation of concerns: infrastructure code is generated and never touched by hand. Your team works in exactly two places, the model and the business logic.
You define
ROSA generates
Build · maintained parts
The part of firmware that is the same everywhere, breaks everywhere, and eats roadmaps everywhere: board support, connectivity, updates, security. Your team picks it as ready-made modules, and we keep them current so your team ships product.
The module catalog: reviewed like a dependency manifest, with every entry's status and where it's used.
Every module goes through the same allow-list your architects control: approved, in review, or blocked, with a reason attached. Your team picks from a catalog we keep patched and current, not from a pile of vendored code nobody owns.
Board & Zephyr
Board support and mainline Zephyr integration: a pilot puts ROSA on your own SoC in one week. Scalable systems architecture with clean separation of concerns by default.
Connectivity & updates
Matter, Thread, KNX IoT, BLE Mesh, Wi-Fi: standards implemented once, not re-fought per product. OTA updates with MCUboot, A/B partitioning, and rollback out of the box.
Security & production
Dependency and vulnerability management: we keep up so you don't have to. System health, diagnostics, logging. End-of-line testing and provisioning, factory-ready from the start.
The cost of keeping these parts up to date is shared across all ROSA customers, instead of falling on your team alone. That's the entire economic point.
Test · Prove
Your team authors tests without ceremony, runs them in emulation or on the bench, and gates releases on facts. The same records become compliance evidence: a live SBOM per build, CVE handling with recorded evidence, exportable packs per release. That is evidence readiness for the CRA, not a binder assembled before the audit.
The live device console: engineers work live with the device, and every interaction can become a regression test on the spot.
Tests run in emulation or hardware-in-the-loop on your benches, and results land in the CI you already run. Every green checkmark drills down to its evidence: test run, commit, artifact, approval. Release gates evaluate live instead of being asserted in a meeting.
Steer
Embedded development is usually a black box between kick-off and release. ROSA opens it, for every role that has to answer for the product.
Your portfolio status, live: every project's progress, forecast, and upcoming milestone, derived from the records, not from Friday reports.
Status and forecasts derive from what actually ran: test results, findings, milestone gates. Deviations are explicit overrules with an owner and an expiry, never silent. Management and engineering look at the same records, so status meetings stop consuming engineering time.
For management
Status and forecasts per project, derived from the actual records: test results, findings, milestones, not from hand-written Friday reports.
For architects
Company-wide policies: approved hardware, module allow-list, sanctioned patterns, with per-project adherence visible at a glance.
For engineers
Architecture editing, test authoring, live device consoles, milestone gates: the daily work, in the same interface everyone else looks at.
Ownership
Generated code is readable, reviewable, and yours, with no runtime dependency on us. You own the code, the learnings, and the product. If 4Rooks disappeared tomorrow, you keep everything you ship.
ROSA runs where you run it: your repos, your CI, your infrastructure, locally or in your backend. Nothing of yours runs on our servers.
ROSA builds on the standard toolchain your team already knows: devcontainer, CI, upstream Zephyr. Your engineers stay employable, your stack stays portable.
An agent can help you draft the model. Generation from the model is deterministic: same model, same code, every time. AI tools work exceptionally well with ROSA, because the structure is explicit, but your firmware is never a language model's guess.
We start from your existing setup. The first conversation is 45 minutes, no commitment, no sales deck.