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i18n/i18n/ja/document-collaboration.md
2025-05-15 12:46:59 +00:00

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---
title: Document Collaboration
icon: material/account-group
description: Most online office suites do not support E2EE, meaning the cloud provider has access to everything you do.
cover: document-collaboration.webp
---
<small>Protects against the following threat(s):</small>
- [:material-server-network: Service Providers](basics/common-threats.md#privacy-from-service-providers){ .pg-teal }
Most online office suites do not support E2EE, meaning the cloud provider has access to everything you do. The provider's privacy policy may legally protect your rights, but it does not provide technical access constraints.
## Collaboration Platforms
### Nextcloud
<div class="admonition recommendation" markdown>
![Nextcloud logo](assets/img/document-collaboration/nextcloud.svg){ align=right }
**Nextcloud** is a suite of free and open-source client-server software for creating your own file hosting services on a private server you control.
[:octicons-home-16: ホームページ](https://nextcloud.com){ .md-button .md-button--primary }
[:octicons-eye-16:](https://nextcloud.com/privacy){ .card-link title="プライバシーポリシー" }
[:octicons-info-16:](https://nextcloud.com/support){ .card-link title=ドキュメント}
[:octicons-code-16:](https://github.com/nextcloud){ .card-link title="ソースコード" }
[:octicons-heart-16:](https://nextcloud.com/contribute){ .card-link title=貢献}
<details class="downloads" markdown>
<summary>Downloads</summary>
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=com.nextcloud.client)
- [:simple-appstore: App Store](https://apps.apple.com/app/id1125420102)
- [:simple-github: GitHub](https://github.com/nextcloud/android/releases)
- [:fontawesome-brands-windows: Windows](https://nextcloud.com/install/#install-clients)
- [:simple-apple: macOS](https://nextcloud.com/install/#install-clients)
- [:simple-linux: Linux](https://nextcloud.com/install/#install-clients)
</details>
</div>
<div class="admonition danger" markdown>
<p class="admonition-title">Danger</p>
Nextcloudでの[E2EEアプリ](https://apps.nextcloud.com/apps/end_to_end_encryption)の使用は、データ損失の可能性があるため、推奨されません。 For this reason, we don't recommend third-party Nextcloud providers.
</div>
### CryptPad
<div class="admonition recommendation" markdown>
![CryptPad logo](assets/img/document-collaboration/cryptpad.svg){ align=right }
**CryptPad** is a private-by-design alternative to popular office tools. All content on this web service is end-to-end encrypted and can be shared with other users easily. [:material-star-box: Read our latest CryptPad review.](https://www.privacyguides.org/articles/2025/02/07/cryptpad-review)
[:octicons-home-16: Homepage](https://cryptpad.fr){ .md-button .md-button--primary }
[:octicons-eye-16:](https://cryptpad.fr/pad/#/2/pad/view/GcNjAWmK6YDB3EO2IipRZ0fUe89j43Ryqeb4fjkjehE){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://docs.cryptpad.fr){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/xwiki-labs/cryptpad){ .card-link title="Source Code" }
[:octicons-heart-16:](https://opencollective.com/cryptpad){ .card-link title=Contribute }
</details>
</div>
### 規準
**Please note we are not affiliated with any of the projects we recommend.** In addition to [our standard criteria](about/criteria.md), we have developed a clear set of requirements to allow us to provide objective recommendations. プロジェクトを利用する前に、このリストをよく理解し、ご自身で調査を行って、そのプロジェクトがあなたにとって適切な選択かどうかをご確認ください。
#### 最低要件
In general, we define collaboration platforms as full-fledged suites which could reasonably act as a replacement to Google Drive.
- オープンソースであること。
- Must make files accessible via WebDAV unless it is impossible due to E2EE.
- Must have sync clients for Linux, macOS, and Windows.
- Must support document and spreadsheet editing.
- Must support real-time document collaboration.
- Must support exporting documents to standard document formats (e.g. ODF).
#### 満たされることが望ましい基準
満たされることが望ましい基準には、このカテゴリーの完璧なプロジェクトに私たちが望むものを示しています。 私たちが推薦するプロジェクトは、この機能の一部または全部を含んでいないかもしれませんが、もし含んでいれば、このページで他のプロジェクトよりも上位にランクされるかもしれません。
- Should store files in a conventional filesystem.
- Should support TOTP or FIDO2 multifactor authentication support, or passkey logins.