Independent software engineering & bespoke applications

Thoughtful software. Built to last.

Zeth Ltd is an independent UK software company. We join engineering teams on contract, particularly for Python and backend work, and we design and build native mobile and desktop applications for organisations with an idea to bring to life.

What we do

Two ways to work with us

For engineering teams & recruiters

Join your team

Zeth joins your developers as a senior engineer, working on your priorities through your team's tools and delivery process.

  • Python and backend services
  • Cross-platform and native application engineering
  • Testing, packaging and release practice

For organisations with a project to deliver

Deliver your project

You agree the scope with us, and we plan, build, test and hand over the software, with regular progress reviews and a plan for maintenance.

  • Mobile and desktop applications
  • Backend services and integrations
  • Agreed handover and ongoing maintenance

Featured project

Your knowledge belongs to you.

Holder is an open-source, local-first knowledge workspace, with mobile and desktop applications built on a shared C/C++ core. Development is supported by Zeth Ltd, and all of its code is open to inspect.

Holder desktop app: a card open in the editor, a graph of its connections to other cards below, and an AI assistant panel alongside
Holder on the desktop: cards, their connections and an AI thread panel.
Zeth, Chief Engineer of Zeth Ltd

About

A founder-led engineering company

Zeth Ltd is small on purpose, run by Zeth and Jutta. When you work with us, the engineering is done by Zeth directly, from the first conversation to the finished release.

About Zeth and the company

Have something in mind?

Whether it is a contract role or an app idea, a short message is the best place to start.