Platform

Developer-friendly backend architecture that's built for speed and responsiveness.

Superior data for high-fidelity performance

Meet the highest possible standards of accuracy leveraging the greatest scope of real-world data, orbital mechanics, high-fidelity physics

Go fast or go far. Why not both?

Can your system run for 4 days straight? Zendir can. Want to run hundreds of asynchronous sims? How about a hundred, a minute.

Truly scalable. Truly extensible.

[Set and foarget: once it’s built there’s no ongoing development required]

Built for devs. Designed for ops. Alt: Designed for operators. Built for the mission team.

From day one our Core architecture was designed to be developer-friendly. Simple implementations. Unlimited customisations. The result? A high-fidelity digital twin system supporting the whole mission team from prototype to end-of-life.

Stress-tested and battle-ready Forged for the ultimate performance Simulations with integrity

We’ve run our system through thousands of tests to ensure our simulations deliver the highest degree of accuracy achievable in a digital twin environment.

Superior data for high-fidelity performance

Meet the highest possible standards of accuracy leveraging the greatest scope of real-world data, orbital mechanics, high-fidelity physics

Go fast or go far. Why not both?

Can your system run for 4 days straight? Zendir can. Want to run hundreds of asynchronous sims? How about a hundred, a minute.

Truly scalable. Truly extensible.

[Set and foarget: once it’s built there’s no ongoing development required]

Built for devs. Designed for ops. Alt: Designed for operators. Built for the mission team.

Stress-tested and battle-ready Forged for the ultimate performance Simulations with integrity

We’ve run our system through thousands of tests to ensure our simulations deliver the highest degree of accuracy achievable in a digital twin environment.

Architecture designed for mission scale and complexity

Zendir Core connects simulation engines, mission logic, hardware inputs, and operator interfaces into a single cohesive digital twin environment—allowing teams to rehearse, validate, and automate operations end-to-end.

Start free trial

Built to integrate with existing systems

HitL

SitL

TypeScript SDK

Python SDK

OpenC3

CCSDS

Unreal

Zendir Studio

Design and build mission-ready digital twins.

Zendir Studio provides a space-domain platform for constructing spacecraft mission designs and assembling simulation components into fully testable mission environments.

Book a demo

Zendir Editor

Visualise, configure, and interact with missions.

Zendir Editor enables operators and engineers to configure missions, visualise system behaviour, and interact with simulations in real time—supporting rapid iteration and confident decision-making.

Book a demo

Zendir API

Programmatic access for advanced mission automation.

Our standard API is built to be language agnostic. And we also offer a Python SDK for quick integrations

Book a demo

Orbital-only, minimal internal systems
Static libraries, slow updates
Performance degradation beyond a few assets
No built-in autonomy layer
Standalone or proprietary stacks
Rigid licensing
Lock-in contracts
High switching costs
Limited single-asset focus
Minimal or post-hoc data

Outdated simulation models
No support for multi-asset scaling
Manual data validation processes
Limited telemetry integration
Slow scenario iteration
High ongoing maintenance costs

The Zendir effect

Full-system digital twins with subsystem and fault modeling
Realtime feedback from configurable environments
Asynchronous runtime tested with 1000+ concurrent assets
End-to-end workflow validation and agentic ops support
Open API, live system integration and C2-compatible interfaces
Flexible, on-demand deployments tailored to your ops stack
Built for operational scale across full constellations
Realtime, high-fidelity telemetry ingestion and actionable analytics

Trusted by industry leaders

Zendir works with leading organisations across the space sector to strengthen operational readiness and deliver mission assurance at scale.

Latest platform updates

Want to get under the hood of the Z-Core engine? Head to docs.zendir.io to access the full scope of data powering our digital twin solutions. You'll also find technical information about our language-agnostic REST API, along with Typescript and Python SDKs for teams wanting a low-code configuration.

Mission assurance guide

The critical role of digital twin tech in cybersecurity for space ops

Hackers are already probing space ops. Can your mission team identify a cyber anomaly and block an attack? Cyber training is a must for mission success.

Product updates

Rise of Artificial Intelligence in the Space Industry

AI and improvements in machine learning algorithms are rapidly advancing space operations due to increased computational power and the availability of massive datasets.

Product updates

Zendir Partners with Strathclyde Uni on £1.5M Research Project for AI for Space Safety and Sustainability:

Zendir to participate in an international collaboration funded by a £1.5 million initiative under the UK Space Agency and led by Strathclyde University .