# ONLYOFFICE Workspace alternatives — Business Email & Office Suites As of 6 Nov 2026, the panel rates [grommunio (3.5/5)](https://whats-best.ai/software/business-email/grommunio), [Infomaniak kSuite (3.5/5)](https://whats-best.ai/software/business-email/infomaniak-ksuite) and [Nextcloud Hub (Groupware & Office) (3.5/5)](https://whats-best.ai/software/business-email/nextcloud-hub) highest among the other 14 Business Email & Office Suites products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is [grommunio](https://whats-best.ai/software/business-email/grommunio) (EU-Made). Ratings are the AI panel’s opinion, formed from public evidence: [how scores are made](https://whats-best.ai/methodology#ordering). - Canonical page: https://whats-best.ai/software/business-email/onlyoffice-workspace/alternatives - ONLYOFFICE Workspace: https://whats-best.ai/software/business-email/onlyoffice-workspace.md - Data as of: 2026-11-06 **AI-generated.** Ratings and verdicts are the opinion of a panel of AI judges, formed from public evidence against a published rubric — an analysis, not a hands-on test. Listed by panel rating (products the panel could not rate follow alphabetically); no placement is for sale. How lists are ordered: https://whats-best.ai/methodology#ordering ## European alternatives to ONLYOFFICE Workspace - [grommunio](https://whats-best.ai/software/business-email/grommunio) · EU-Made · panel rating 3.5/5 · data hosting: not stated on the vendor’s pages · free plan per the vendor’s page captured 2026-11-05 grommunio, an open-source Exchange replacement from grommunio GmbH of Vienna, scores between 5 and 8 across the seven criteria. - [Infomaniak kSuite](https://whats-best.ai/software/business-email/infomaniak-ksuite) · UK / wider Europe · panel rating 3.5/5 · data hosting: Default not stated; pages mention Switzerland · free plan per the vendor’s page captured 2026-11-05 Infomaniak kSuite — mail, calendar, contacts, kDrive, kChat and kMeet from Infomaniak Network SA of Geneva — scores strongest on sovereignty at 7 to 8: own Swiss data centres, data stated never to leave the vendor's own infrastructure, employee-held capital guarded by a foundation, and support staff in Geneva and Zurich. - [Nextcloud Hub (Groupware & Office)](https://whats-best.ai/software/business-email/nextcloud-hub) · EU-Made · panel rating 3.5/5 · data hosting: not stated on the vendor’s pages Nextcloud Hub is an open-source, self-hosted groupware and office suite from Nextcloud GmbH of Stuttgart (registered at AG München, HRB 227086), and the bench scores it highest where control matters: sovereignty at 8-9 and calendar and office at 7-8, with security and compliance at 7-8. - [Proton for Business](https://whats-best.ai/software/business-email/proton-business) · UK / wider Europe · panel rating 3.5/5 · data hosting: not stated on the vendor’s pages Proton for Business is the end-to-end encrypted mail, calendar, documents and storage suite from Proton AG in Geneva. - [IONOS E-Mail & Office](https://whats-best.ai/software/business-email/ionos-email-office) · EU-Made · panel rating 3/5 · data hosting: Default not stated; pages mention Germany The bench reads IONOS E-Mail & Office as a German mail-and-office package, strong on hosting, archiving and stated prices, thin on administration and exit. - [mailbox.org Business](https://whats-best.ai/software/business-email/mailbox-org) · EU-Made · panel rating 3/5 · data hosting: Default not stated; pages mention Germany mailbox.org Business, operated by Heinlein Hosting GmbH, bundles mail (webmail, IMAP, POP3), calendar, contacts, browser office editing, drive and video meetings, with servers stated to stand exclusively in Berlin. - [Tuta Business](https://whats-best.ai/software/business-email/tuta-business) · EU-Made · panel rating 3/5 · data hosting: Default not stated; pages mention Germany · free plan per the vendor’s page captured 2026-11-05 Tuta Business from Tutao GmbH of Hanover is an end-to-end encrypted mail, calendar and file bundle on custom domains, with three public business tiers at €6, €8 and €12 per user per month paid yearly, each marked "Excludes taxes". - [Runbox](https://whats-best.ai/software/business-email/runbox) · UK / wider Europe · panel rating 2.5/5 · data hosting: Default not stated; pages mention Norway Runbox is email hosting from Runbox Solutions AS of Oslo, and the bench's scores are sharply two-sided. - [Hostpoint E-Mail & Cloud Office](https://whats-best.ai/software/business-email/hostpoint-email) · UK / wider Europe · panel rating 2.5/5 · data hosting: not stated on the vendor’s pages Hostpoint E-Mail & Cloud Office is a Swiss mail and office bundle, and the bench scores it highest where the pages are most open: pricing transparency sits at 6 with no spread, and calendar and office at 6 to 7. - [STRATO Mail](https://whats-best.ai/software/business-email/strato-mail) · EU-Made · panel rating 2/5 · data hosting: not stated on the vendor’s pages · free plan per the vendor’s page captured 2026-11-05 STRATO Mail is a hosted German business e-mail product — webmail on Open-Xchange, mailboxes on your own.de domain, up to 250 aliases, server-side spam and virus filtering — and the judges' persona-weighted totals cluster at 4.2–4.6. ## Other alternatives - [Microsoft 365 Business](https://whats-best.ai/software/business-email/microsoft-365-business) · Rest of world · panel rating 3/5 Microsoft 365 Business is a hosted Exchange Online suite bundled with Word, Excel, PowerPoint, Outlook, Teams and 1 TB of OneDrive per user. - [Zoho Workplace](https://whats-best.ai/software/business-email/zoho-workplace) · Rest of world · panel rating 3/5 · free plan per the vendor’s page captured 2026-11-05 Zoho Workplace, a business email and office suite from Zoho Corporation, is strongest on mail and deliverability and administration and identity, which both range 7 to 7: mailboxes on the customer's own domain with IMAP, POP, SMTP and ActiveSync, SPF, DKIM, DMARC and DNSBL checks with quarantine, and an admin console with role-based permissions, SAML single sign-on on every plan and a broad provisioning API. - [Google Workspace](https://whats-best.ai/software/business-email/google-workspace) · Rest of world · panel rating 2.5/5 Google Workspace is Google LLC's business email and office suite, and the bench scored it strongest where the bundle is thickest: calendar and office sits at 6 throughout (minimum 6, maximum 6), with Gmail, Meet, Chat, Calendar, Drive, Docs, Sheets and Slides on every plan and Office-file interoperability stated throughout, while pricing transparency clusters at 6-7 with euro prices published for all three business tiers. - [Fastmail for Business](https://whats-best.ai/software/business-email/fastmail) · Rest of world · panel rating 2/5 Fastmail for Business, from Fastmail Pty Ltd, Australia, earns its best scores on migration and portability, 5 to 6: a self-serve tool imports mail, contacts and calendars from IMAP, CardDAV or CalDAV sources, with everything reachable over JMAP, IMAP, POP, SMTP, CalDAV, CardDAV and WebDAV. Ratings are out of 5 (the panel's mean, half steps). --- Cite as: whats-best.ai, "ONLYOFFICE Workspace alternatives — Business Email & Office Suites", AI panel analysis, as of 2026-11-06. https://whats-best.ai/software/business-email/onlyoffice-workspace/alternatives