Private company

ZeroSSL

Logo: zerossl.com²

ZeroSSL is a certificate authority based in Vienna, founded in 2016.¹

Last updated Oct 21, 2026.

Overview

2016Founded¹

HeadquartersVienna, Austria¹
Websitezerossl.com

See how the biggest companies compare on our leaderboards

Subsidiaries and ownership

Owners

Stack Holdings GmbH

From Wikidata.¹

Timeline

2016Founded Founded¹

Links

Websitezerossl.com¹
X (Twitter)x.com/zerosslhq¹
LinkedInwww.linkedin.com/company/ZeroSSL¹
WikidataQ110800308

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataZeroSSL on Wikidata
2
Company websiteZeroSSL logo