From AI and deeptech to fintech and sustainability, discover the Luxembourg startups making waves in September 2026.
From fintech and AI to deeptech and sustainability, Luxembourg’s startup scene keeps moving. This month’s Startup Radar highlights 10 companies to watch, from emerging ventures tackling new challenges to founders building ambitious solutions with international potential.
10 Luxembourg Startups
To Watch
The most exciting startups aren’t always the loudest ones in the room. We’ve done the scanning. Here are the ones you need to know.
Spacecraft generate more data than they can move. Edge Aerospace builds the data-processing systems and network switches that fix that — high-bandwidth links between payload sensors and processors for real-time in-space analytics. Screened off-the-shelf components keep costs down without sacrificing mission-grade reliability. The plumbing satellites didn’t know they needed.
Kids’ mental health support shouldn’t be an afterthought. Happy Kids Academy’s AI-powered platform builds children’s and teenagers’ resilience, emotional literacy, and wellbeing — edtech and healthtech in one. Prevention, not just intervention.
The Moon needs mobility. Lunar Outpost builds space robotics and lunar rovers — autonomous vehicles like MAPP and NASA’s Artemis LTV programme — delivering mobility-as-a-service for scientific and commercial payloads in extreme environments. Luxembourg’s link to the lunar surface.
Fleet leasing still runs on spreadsheets and phone calls. Optryt’s SaaS platform, LeaseRyt, standardises the process — structured RFQs, offer comparison, and document management for fleet owners, leasing companies, and dealerships. Data-driven automation for an industry that’s overdue for it.
Stray light ruins optical performance — StrayProtect eliminates it. The LIST spin-off applies ultra-black nano-coatings to complex 3D parts, a process purpose-built for aerospace and optics makers. Backed by ESA. Ultra-black, ultra-precise.
Most conversations still disappear the moment they end. Subphonic turns voice and audio into structured, actionable data — transcribing, analysing, and surfacing insight to sharpen operations, compliance, and decision-making. Two raises in two years. Voice AI with a business case attached.
TeamIA builds sovereign AI agents for ambitious companies across Luxembourg and the Greater Region. Fit4AI and SME Package AI accredited — from AI diagnostics to deployment.
Forensic identification still moves too slowly. Unknown Labs is building the global intelligence network for it — connecting spectrometers across institutions and borders so substances are identified in seconds and emerging threats spotted as they spread. House of BioHealth gives it the ecosystem to scale.
Nuclear and radiological preparedness has a capability gap — across defence, civilian, aerospace, and space. USIL Therapeutics is developing whole-body radioprotective medical countermeasures for rapid institutional deployment, built from Luxembourg’s central position in the EU, aerospace, and NATO procurement ecosystem. Protection before, during, and after exposure.
Since 2020, Zetako has been developing proprietary technologies around one thesis: data efficiency and ownership matter. Its four product lines — ZNode, ZNano, ZCaps and ZChain — span private collaboration workspaces, embedded compression, adaptive statistical compression and blockchain data compression. Following years of deep R&D, Zetako is now entering its commercialisation phase and preparing its next funding round. “Sovereign digital infrastructure, built from original research.”
Send us your details — we review submissions on a rolling basis and only contact shortlisted startups.
- Company name and website
- Founder(s) name(s)
- Total funding raised (or “Undisclosed”)
- Incubator / ecosystem affiliation
- A short pitch — what you do, what makes you unique, and why now
Only startups operating in or from Luxembourg are considered.