MULTI-STACK A software team that ships things that last

Secure, performant, crafted software.

We build software the way it should be built: secure by default, fast by design, rigorous by principle.

Get in touch What we do AI-accelerated · human-decided

What we stand for

Built with craft and care.

Our stack changes with the job. Our standards don't.

Done right

  • Accuracy over shortcuts
  • Built to last, not patched forever
  • Engineering, not guesswork

Built in, not bolted on

  • Security designed in from day one
  • Performance measured, not assumed
  • Never an afterthought

AI, used well

  • AI accelerates the work
  • Humans make every call
  • No AI slop

Technologies

One team, many stacks.

We pick the right tool for each job. Rust is one strength among many — from systems code to product web apps.

Services

Custom software, built to your problem.

Hire the team to design and build it — in whatever stack fits.

Systems & backend engineering

High-performance services, APIs, CLIs and protocols — the load-bearing parts of your product.

  • APIs
  • Backends
  • CLIs
  • Protocols

Security & performance reviews

Audits, hardening and profiling for software you already run.

  • Audits
  • Hardening
  • Profiling

Web & product development

Full applications, from the database to an interface people enjoy using.

  • Web apps
  • SaaS
  • Interfaces

AI-assisted delivery, human-led

We use AI to deliver faster, with an engineer reviewing every change.

  • Human-in-the-loop
  • Faster delivery

What we build

A marketplace, coming soon.

Our own products — the first ones are nearly ready.

Coming soon

Codetero Marketplace

One home for everything we ship.

  • Free under license, or by subscription
  • Hosted for you, or a secure download
  • Closed source, backed by the team that built it

First on the shelf

  • polywell

    Secure-by-default transport for Rust — authenticated, forward-secret QUIC addressed by public key.

  • plasmoid

    Docs you own — Markdown in, fast static HTML out. Multilingual, versioned, no Node.

Who we are

A small team that cares about its software.

We're engineers who like building things properly.

Two kinds of work

  • ProductsOur own software — free under license, or by subscription.
  • Custom softwareBuilt for the clients who hire us.

Why closed source?

  • We believe in open sourceThis isn't a stance against it.
  • Small team, real focusThe classic open-source model is hard to run well at our size.
  • Energy into qualityWe'd rather spend it on quality and security.
  • We stand behind every lineThe source stays closed — the accountability doesn't.
  • Open to collaborationUsing our software and want to help improve it? Get in touch.

Let's talk

Let's build something together.

Tell us what you're working on — a product, a platform, or an idea you're still shaping. We'd love to hear about it.

Contact us

A problem to solve, or ideas to make our software better — either way, say hello.