Google Drive / Docs 代替ツール比較

8サービスを4軸で評価。総合点の高い順に並べています。詳細は各ツールページへ。

ツール プライバシー 使いやすさ 機能の豊富さ コスパ 総合
Nextcloud 16/20
Proton Drive 14/20
CryptPad 16/20
Tresorit 14/20
Sync.com 16/20
pCloud 17/20
OnlyOffice 16/20
Collabora Online 15/20

詳細比較マトリクス

項目 Nextcloud Proton Drive CryptPad Tresorit Sync.com pCloud OnlyOffice Collabora Online
料金 Self-hostedFree + paidFree + paidPaidFree + paidFree + paidFree + paidFree + paid
難易度 AdvancedEasyEasyEasyEasyEasyModerateModerate
OSS
データ保存 Your choice—home NAS, domestic VPS, on-prem, etc.Switzerland and Germany (Proton DCs; zero-access encryption).France (cryptpad.fr) or your self-hosted server.Switzerland, Ireland, Netherlands, etc. (EU/EEA; zero-knowledge).Canada (Toronto, etc.; zero-knowledge encryption).Switzerland (company) plus US/EU DCs (user choice). Crypto vault is zero-knowledge.Self-hosted location or ONLYOFFICE Cloud (EU/US choice).Typically same server as Nextcloud (self-hosted).
Privacy 5/55/55/55/55/54/54/54/5
Ease of use 2/54/54/54/54/54/53/53/5
Features 5/52/53/53/53/54/55/54/5
Value 4/53/54/52/54/55/54/54/5

総合ランキング

  1. 1
    pCloud

    Feature-rich cloud with optional lifetime plans

    17 /20
  2. 2
    Nextcloud

    The open-source hub for data sovereignty

    16 /20
  3. 3
    CryptPad

    E2EE collaboration—even without an account

    16 /20
  4. 4
    Sync.com

    Balanced E2EE storage from Canada

    16 /20
  5. 5
    OnlyOffice

    Self-hostable MS-compatible office suite

    16 /20
  6. 6
    Collabora Online

    LibreOffice-powered browser co-editing

    15 /20
  7. 7
    Proton Drive

    E2EE drive in the Proton ecosystem

    14 /20
  8. 8
    Tresorit

    Compliance-ready E2EE cloud storage

    14 /20

プライバシー最優先

E2EE・自己ホスト・トラッキング最小

Nextcloud →

初心者向け

設定が簡単で即日移行可能

Proton Drive →

コスパ重視

無料または低コストで実用的

pCloud →