Exhibit 21.1
Subsidiaries of Open Text Corporation as of June 30, 2025

Corporation NameJurisdiction
Attachmate Group Australia Pty LtdAustralia
Micro Focus Australia Pty LtdAustralia
Open Text Pty LimitedAustralia
Micro Focus Austria GmbHAustria
Open Text Software Austria GmbHAustria
Open Text (Barbados) Investments SRL Barbados
Micro Focus Belgium BVBelgium
Micro Focus Brasil Serviços de Tecnologia LtdaBrazil
Open Text Tecnologia Da Informação (Brasil) Ltda.Brazil
Open Text Bulgaria EOODBulgaria
8493642 Canada Inc.Canada
Micro Focus Software (Canada) ULCCanada
Open Text Canada Ltd.Canada
Micro Focus Marigalante Ltd.Cayman Islands
Covisint Software Services (Shanghai) Co., Ltd.China
GXS (Shanghai) Software Development LimitedChina
Open Text Software Technology (Shanghai) Co., LtdChina
Shanghai Micro Focus Software Technology Co., LtdChina
Micro Focus Centroamerica CAC LimitadaCosta Rica
Micro Focus Costa Rica LimitadaCosta Rica
Micro Focus Czechia s.r.o.Czech Republic
Open Text s.r.o.Czech Republic
Carbonite China Holdings, LLCDelaware, United States
Carbonite, LLCDelaware, United States
Entco, LLCDelaware, United States
Full 360 Group Inc.Delaware, United States
GXS International, Inc.Delaware, United States
GXS, LLCDelaware, United States
Micro Focus (US) Group, Inc.Delaware, United States
Micro Focus (US) International Holdings, Inc.Delaware, United States
Micro Focus (US), Inc.Delaware, United States
Micro Focus Brazil Holdings LLCDelaware, United States
Micro Focus Government Solutions LLCDelaware, United States
Micro Focus LLCDelaware, United States
Micro Focus Software Inc.Delaware, United States
NetIQ CorporationDelaware, United States
Novell Holdings, Inc.Delaware, United States
Open Text Inc.Delaware, United States
Open Text US Acquisition Holdings, LLCDelaware, United States
Open Text US Investments Holdings, LLCDelaware, United States
Seattle SpinCo, Inc.Delaware, United States
Serena Software, Inc.Delaware, United States
Stratify, Inc.Delaware, United States
Total Defense, LLCDelaware, United States
Vertica Systems, LLCDelaware, United States
Vignette Partnership, LPDelaware, United States



Webroot, LLCDelaware, United States
ZixCorp Systems, Inc.Delaware, United States
Micro Focus Software Denmark ApSDenmark
Open Text A/SDenmark
Autonomy Systems LimitedEngland & Wales
GXS LimitedEngland & Wales
Longsand LimitedEngland & Wales
Micro Focus (US) HoldingsEngland & Wales
Micro Focus CHC LimitedEngland & Wales
Micro Focus Foreign HoldCo LtdEngland & Wales
Micro Focus Group LimitedEngland & Wales
Micro Focus Holdings UnlimitedEngland & Wales
Micro Focus Integration LimitedEngland & Wales
Micro Focus International LimitedEngland & Wales
Micro Focus IP Development LimitedEngland & Wales
Micro Focus MHC LimitedEngland & Wales
Micro Focus Midco Holdings LimitedEngland & Wales
Micro Focus Midco LimitedEngland & Wales
Micro Focus Situla Holding LtdEngland & Wales
Micro Focus Software (IP) Holdings LimitedEngland & Wales
Micro Focus Software Holdings LtdEngland & Wales
Micro Focus Software UK LtdEngland & Wales
Open Text UK Holding LimitedEngland & Wales
Open Text UK Investments Global Holdings LimitedEngland & Wales
Open Text UK Investments International Holdings LimitedEngland & Wales
Open Text UK Investments International LimitedEngland & Wales
Open Text UK Investments LimitedEngland & Wales
Open Text UK LimitedEngland & Wales
Open Text UK Investments Global LimitedEngland & Wales
Resonate KT LimitedEngland & Wales
Open Text OyFinland
AppRiver, LLCFlorida, United States
Arm Research Labs, LLCFlorida, United States
Micro Focus France SASFrance
Open Text SARLFrance
Attachmate Group Germany GmbHGermany
Borland GmbHGermany
GWAVA EMEA GmbHGermany
Mailstore Software GmbHGermany
Micro Focus Deutschland GmbHGermany
Novell Holding Deutschland GmbHGermany
Open Text Document Technologies GmbHGermany
Open Text Software GmbHGermany
Open Text Unterstützungskasse e.VGermany
RecomMind GmbHGermany
Serena Software GmbHGermany
Micro Focus Software HK LimitedHong Kong
Open Text (Hong Kong) LimitedHong Kong
Autonomy Software Asia Private LimitedIndia



Entco IT Services Private LimitedIndia
GXS India Technology Centre Private LimitedIndia
Micro Focus Software India Private LimitedIndia
Micro Focus Software Solutions India Private LimitedIndia
Open Text Corporation India Private LimitedIndia
Open Text Technologies India Private LimitedIndia
Vignette India Private LimitedIndia
Micro Focus (IP) Ireland LimitedIreland
Micro Focus Galway LimitedIreland
Micro Focus Group Holdings UnlimitedIreland
Micro Focus International Holdings LimitedIreland
Micro Focus Ireland LimitedIreland
Micro Focus Software (Ireland) LimitedIreland
Micro Focus Software Solutions Ireland LimitedIreland
NetIQ Ireland LimitedIreland
Novell Cayman Software International Unlimited CompanyIreland
Novell Cayman Software Unlimited CompanyIreland
Novell Software International LimitedIreland
Open Text Ireland LimitedIreland
Webroot International LimitedIreland
Chameleon Holdings Ltd.Israel
CloudAlly Ltd.Israel
Micro Focus Interactive Israel LtdIsrael
Micro Focus Israel LimitedIsrael
Micro Focus Software Israel LtdIsrael
N.Y. NetManage (Yerushalayim) LtdIsrael
Novell Israel Software LimitedIsrael
Micro Focus Italiana S.r.l.Italy
Open Text S.r.l.Italy
Micro Focus Enterprise LtdJapan
Novell Japan, LtdJapan
Open Text K.K.Japan
Serena Software Japan LLCJapan
Micro Focus Luxembourg S.à r.l.Luxembourg
Open Text Software Technology (Malaysia) Sdn BhdMalaysia
Micro Focus Software Solutions Mexico, S. de R.L. de C.V.Mexico
Open Text, S. de R.L. de C.V.Mexico
GreenView Data, Inc.Michigan, United States
Autonomy HoldCo B.V.Netherlands
Entco Gatriam Holding B.V.Netherlands
Entco Holding Berlin B.V.Netherlands
Entco Holding Hague II B.V.Netherlands
Entco Sinope Holding B.V.Netherlands
Micro Focus Caribe Holding B.V.Netherlands
Micro Focus Eastern Holding II B.V.Netherlands
Micro Focus Enterprise B.V.Netherlands
Micro Focus HoldCo B.V.Netherlands
Micro Focus Holding Finance B.V.Netherlands
Micro Focus Holding Hague B.V.Netherlands



Micro Focus Holding PR B.V.Netherlands
Micro Focus Nederland B.V.Netherlands
Open Text Coöperatief U.A.Netherlands
Full 360 IncNew York, United States
Micro Focus Software (New Zealand) UnlimitedNew Zealand
Open Text New Zealand LimitedNew Zealand
Micro Focus ASNorway
3304709 Nova Scotia LimitedNova Scotia, Canada
4585054 Nova Scotia CompanyNova Scotia, Canada
AppRiver Canada ULCNova Scotia, Canada
Micro Focus Software Solutions Canada Co. / Solutions Logiciels Micro Focus Canada Cie.Nova Scotia, Canada
Open Text Canada International Investments ULCNova Scotia, Canada
Open Text SA ULCNova Scotia, Canada
Open Text Venture Capital Investment Limited PartnershipOntario, Canada
Micro Focus Software, Inc.Philippines
Open Text (Philippines), Inc.Philippines
Micro Focus Polska sp. z o.o.Poland
Open Text Sp.z.o.o.Poland
Micro Focus Portugal Informática, LdaPortugal
Nstein Technologies Inc.Quebec, Canada
XMedius Solutions Inc.Quebec, Canada
Micro Focus Korea LtdRepublic of Korea
Open Text Korea Co., Ltd.Republic of Korea
Micro Focus Software Romania SRLRomania
Open Text Middle East and North Africa Regional Headquarters CompanySaudi Arabia
Micro Focus LLCSaudi Arabia
Open Text Saudi Arabia LLCSaudi Arabia
Entco Software Pte. Ltd.Singapore
Micro Focus Software Pte. Ltd.Singapore
Open Text (Asia) Pte LimitedSingapore
Micro Focus Software South Africa (Pty) LtdSouth Africa
Open Text South Africa (Pty) LimitedSouth Africa
Micro Focus Field Delivery Spain S.L.U.Spain
Micro Focus Software Spain S.L.U.Spain
Open Text Software, S.L.U.Spain
debricked ABSweden
Micro Focus Sverige ABSweden
Open Text ABSweden
Micro Focus International Suisse SàrlSwitzerland
Micro Focus Schweiz GmbHSwitzerland
Open Text AGSwitzerland
Zix International AGSwitzerland
Micro Focus Taiwan Co., LtdTaiwan
Zix CorporationTexas, United States
GXS Ltd.Thailand
Atarlabs Bilişim Anonim ŞirketiTurkey
Micro Focus Teknoloji Çözümleri Limited ŞirketiTurkey
Micro Focus Ukraine, LLC.Ukraine



Micro Focus Software Middle East FZ-LLCUnited Arab Emirates
Open Text Public Sector Solutions, Inc.Virginia, United States
CM2.COM, Inc.Washington, United States
Attachmate CorporationWashington, United States
*Excludes entities that are in liquidation or dissolution