What are the best encryption software?

The “best” encryption software depends heavily on what you need to protect (whole disk, external drive, cloud files, individual documents, email, etc.), but a small set of mature, well-audited tools covers most use cases.

Below are widely recommended options, grouped by task.

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### 1. Full‑disk & system drive encryption

**Windows**

- **BitLocker** (built into Pro/Enterprise editions)

- Integrated with Windows, supports TPM, good performance, widely used in enterprise.[6]

- Ideal if you only use Windows and want *set‑and‑forget* full‑disk encryption.

- **VeraCrypt**

- Free, open‑source, and supports full‑disk or partition encryption.[7][6]

- Good if you want more transparency than BitLocker or cross‑platform usage.

**macOS**

- **FileVault 2**

- Built‑in whole‑disk encryption for macOS, enabled in System Settings.[6]

- Strong default choice for Mac laptops/desktops.

**Linux**

- **LUKS/dm‑crypt**

- Standard full‑disk encryption on Linux; recommended by privacy‑focused communities for Linux‑only systems.[2]

- Often set up during OS installation with a simple GUI.[2]

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### 2. External drives & USB sticks

- **VeraCrypt**

- Excellent for encrypting external disks and USB drives, with containers that work across Windows, macOS, and Linux.[1][7]

- Frequently recommended for external disks when cross‑platform access is needed.[2]

- **LUKS** (if Linux‑only)

- Recommended when you only need to use the drive on Linux systems.[2]

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### 3. Cloud storage (Dropbox, Google Drive, OneDrive, etc.)

- **Cryptomator**

- Open‑source, client‑side encryption that creates an encrypted “vault” inside your cloud folder.[7]

- Specifically recommended for protecting data stored in the cloud.[1][2]

- *Alternative (basic)*:

- Encrypted **ZIP/7‑Zip** archives (AES‑256) for small sets of files, if you don’t want an always‑mounted vault.[1][6]

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### 4. Individual files & small sets of documents

- **7‑Zip (or modern ZIP tools)**

- Free, supports AES‑256 encryption for archives, good for sharing or storing a few files.[6][1]

- When you care about hiding filenames, zip everything once *without* a password, then zip that archive again *with* a password so filenames are encrypted too.[1]

- **AxCrypt**

- Focuses on easy file‑level encryption, with features like automatic cloud encryption and encrypted file sharing.[5]

- Useful for Windows users who want a simple file‑encryption workflow.

- **VeraCrypt containers**

- Create a file‑based “virtual drive” that you mount when needed; suits larger collections of files you frequently access.[7]

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### 5. Email & message content

- **Proton Mail**

- End‑to‑end encrypted email service; encryption is built‑in and transparent between Proton users.[1]

- Also supports sending password‑protected messages to non‑Proton recipients.

- **PGP/GPG (GnuPG)**

- Open‑source implementation of PGP for strong email/file encryption and signing.[1]

- Very powerful but more complex; often used with email clients like Thunderbird.

- **Practical workaround with no special mail provider**:

- Put sensitive content in a document, encrypt it with 7‑Zip (strong password), and send the encrypted file as an email attachment; share the password via another channel (e.g., phone or messaging app).[1]

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### 6. Passwords & secrets (strictly speaking, not general file encryption but often asked together)

- **Password managers** like NordPass, 1Password, Bitwarden, etc., use strong encryption to store passwords and secure notes.[4][6]

- Best for managing logins and small secrets, *not* large files.

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### 7. How to choose “the best” for you

Use this mapping as a quick guide:

| Use case | Recommended tools (typical “best” picks) |

|----------------------------------------|-------------------------------------------------------------|

| Windows system drive | **BitLocker**, or **VeraCrypt** if you prefer open‑source |

| macOS system drive | **FileVault 2** |

| Linux system drive | **LUKS/dm‑crypt** |

| External USB / portable drive | **VeraCrypt**; **LUKS** if Linux‑only |

| Cloud storage encryption | **Cryptomator** |

| Encrypting a few files/folders | **7‑Zip/ZIP (AES)**, **AxCrypt**, or **VeraCrypt container**|

| Encrypted email (easy) | **Proton Mail** |

| Encrypted email (advanced / geeky) | **PGP/GPG (GnuPG)** |

If you tell me your operating system(s) and what exactly you want to protect (e.g., “laptop SSD,” “USB stick,” “Dropbox folder,” “email attachments”), I can narrow this down to a concrete, step‑by‑step recommendation.