When was zerothird founded?

zerothird was founded in 2023 and raised its 1st funding round 2 years after it was founded.

Where is zerothird located?

zerothird is headquartered in Vienna, Austria.

Is zerothird a funded company?

zerothird is a funded company, having raised a total of $10M across 2 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Jul 01, 2025.

When was the latest funding round of zerothird?

zerothird's latest funding was a $***** Seed round on Mar 23, 2026, with participation from 2 investors.

Where does zerothird rank among its competitors?

zerothird ranks 9th amongst 80 active competitors, of which 21 are funded. It stands 8th in terms of total funding among its competitors. The most recent competitor to raise funding was zerothird, which secured an undisclosed amount in Mar, 2026.

Who are the top competitors of zerothird?

zerothird's top competitors include QNu Labs, QuintessenceLabs and SEALSQ. Among them, zerothird secured the most recent funding round in March, 2026.

zerothird - 2026 Company Profile, Funding & Competitors

Company Details

Developer of quantum key distribution systems and related lab equipment. The company provides quantum-grade protection through entangled photon sources and detector systems. It delivers enterprise-grade quantum keys as a managed service. The company's systems are engineered for deployment across enterprise and infrastructure networks.

Key Metrics

Founded Year

2023

Location

Vienna, Austria

Stage

Seed

Total Funding

$10M in 2 rounds

Latest Funding Round

Seed, Mar 23, 2026, $*****

Investors

Sparring Capital & 3 more

Ranked

9^th among 80 active competitors

Similar Companies

QNu Labs & 80 more

View zerothird's full profile

zerothird has raised a total funding of $10M over 2 rounds. Its first funding round was on Jul 01, 2025. Its latest funding round was a Seed round on Mar 23, 2026 for $*****. 2 investors participated in its latest round. zerothird has 4 institutional investors.

Here is the list of recent funding rounds of zerothird:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Mar 23, 2026	5443414	Seed	2685003	8809206	1205855	2303699
Jul 01, 2025	1945588	Seed	6154387	9940608	Sparring Capital	Findus Venture & 1 more

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Top competitors of zerothird include QNu Labs, QuintessenceLabs and SEALSQ. Here is the list of Top 10 competitors of zerothird, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	QNu Labs 2016, Bengaluru (India), Series A	Provider of quantum cryptography solutions, key distribution, random number generation	$22.3M	HDFC Bank, Speciale Invest & 91 others	69/100
2nd	QuintessenceLabs 2008, Canberra (Australia), Series B	Provider of quantum cybersecurity solutions, including key management and distribution	$52.7M	Westpac, Main Sequence & 23 others	67/100
3rd	SEALSQ 2022, Cointrin (Switzerland), Public	Manufacturer of semiconductor chips, embedded firmware, and other products	-	-	62/100
4th	BTQ 1998, Vancouver (Canada), Public	Provider of a platform offering post-quantum blockchain scaling solution	-	Quadrilium Ventures, A.G.P. Canada	61/100
5th	QuSecure 2019, San Mateo (United States), Series A	Provider of platform for cryptographic discovery, remediation, and compliance reporting	$28M	EvoNexus, Accenture & 2 others	56/100
6th	Naoris Protocol 2017, Wilmington (United States), Series A	Provider of a platform offering a suite of cybersecurity solutions	$15.1M	Mason Labs, Uniera.ir & 14 others	56/100
7th	PQ Solutions 2009, London (United Kingdom), Series A	Post quantum encryption based data and communication security	$16.9M	Techstars, AM Partners & 15 others	55/100
8th	ISARA 2015, Waterloo (Canada), Series A	Post-quantum encryption-based data security solution	$10M	Shasta Ventures, Government of Canada & 3 others	53/100
9th	zerothird 2023, Vienna (Austria), Seed	Developer of quantum key distribution systems and related lab equipment	$10M	Sparring Capital, KGAL & 2 others	50/100
10th	Sitehop 2021, Sheffield (United Kingdom), Series A	Provider of network security solutions for enterprises	$18.1M	Amadeus Capital, Manta Ray Ventures & 8 others	48/100