Alternative.me listed M.2 SSDs at the top of hardware requests this week, and it is a fair signal that consumers are still upgrading storage aggressively. The upgrade path stops mattering the moment a laptop is stolen or a desktop is scrapped without wiping. A modern M.2 NVMe holds a decade of photos, tax records, browser history, and password vaults. Full-drive encryption is the one line of defence that survives a physical loss. We tested the eight best SSD encryption apps for Windows, macOS, and Linux desktop to see which ones protect the whole drive without turning the machine into molasses.
What to look for in an SSD encryption app
A good encryption tool does at least three of these:
- Uses hardware acceleration. AES-NI on modern CPUs makes the encryption overhead close to zero. Anything that ignores it is trading speed for nothing.
- Handles pre-boot correctly. Full-disk encryption should ask for the passphrase before the OS loads, not after.
- Supports TPM binding. BitLocker and LUKS can seal the key to the TPM so a physical drive theft cannot brute-force offline.
- Ships as first-party where possible. BitLocker on Windows, FileVault on macOS, LUKS on Linux are all part of the OS. Third-party layers add attack surface.
- Backs up recovery keys cleanly. No recovery key means no data if you forget the passphrase.
Quick comparison
| App | Best for | Free tier | Starting price | Standout feature |
|---|---|---|---|---|
| VeraCrypt | Cross-platform pre-boot | Yes | Free | System-drive encryption on Windows, macOS, Linux |
| BitLocker | Windows built-in | Ships with Pro | Free | TPM sealing, group policy management |
| FileVault | macOS built-in | Yes | Free | iCloud recovery key escrow |
| LUKS with cryptsetup | Linux standard | Yes | Free | dm-crypt is the kernel-level baseline |
| Cryptomator | Cloud drive encryption | Yes | Free desktop | Client-side encryption for Dropbox, Drive |
| DiskCryptor | Windows open source | Yes | Free | Alternative to BitLocker with pre-boot |
| AxCrypt | File-level, simple | Yes, limited | $4/month | Single-click encryption of individual files |
| GnuPG with Cryptsetup | Air-gapped high assurance | Yes | Free | Key material stored offline |
The 8 best apps for SSD encryption on desktop
1. VeraCrypt — best cross-platform pre-boot
VeraCrypt is the fork of TrueCrypt that outlived its predecessor and now covers system-drive and container encryption on Windows, macOS, and Linux. It ships pre-boot authentication on Windows, hidden-volume plausible deniability, and container files that mount as virtual drives. Performance on modern AES-NI CPUs is within a few percent of unencrypted throughput. The community audit history is solid.
Where it falls short: Setup is not friendly. Pre-boot on Secure Boot Windows systems requires extra steps.
Pricing: Free, open source.
Platforms: Windows, macOS, Linux.
Where to get it: veracrypt.fr.
Bottom line: The pick when the same encryption approach has to work across all three desktop OSes.
2. BitLocker — best Windows built-in
BitLocker ships with Windows 11 Pro and Enterprise and covers the whole disk with TPM-sealed keys. It integrates with Windows Hello, Azure AD, and Group Policy for centrally managed encryption. Recovery keys can escrow to your Microsoft account, so a forgotten passphrase does not mean a lost drive. XTS-AES 256 is the current default.
Where it falls short: Windows Home lacks true BitLocker. Device Encryption on Home is a subset.
Pricing: Included with Windows 11 Pro. Not on Home in full form.
Platforms: Windows 11 Pro, Enterprise, Education.
Where to get it: Built into Windows.
Bottom line: If the machine runs Windows Pro, start with BitLocker. It is already there.
3. FileVault — best macOS built-in
FileVault is the Apple-provided full-disk encryption for macOS. It uses AES-XTS with hardware acceleration and hooks into the T2 or Apple Silicon secure enclave to protect keys. Recovery key escrow via iCloud is optional and works. Enabling FileVault on a modern Mac is a single toggle and does not require reformatting.
Where it falls short: No cross-platform. No fine control over the encryption stack.
Pricing: Free, part of macOS.
Platforms: macOS 10.7 and later.
Where to get it: System Settings > Privacy & Security > FileVault.
Bottom line: Every Mac should have FileVault on. There is no reason to run a Mac without it.
4. LUKS with cryptsetup — best Linux standard
LUKS, backed by cryptsetup and dm-crypt, is the Linux kernel’s baseline for full-disk encryption. Every mainstream distro’s installer offers “encrypt the disk” as a checkbox, and LUKS is what runs under it. Performance follows the kernel’s AES-NI implementation and matches BitLocker in practice. LUKS supports multiple key slots so a passphrase and a hardware token can both unlock the same volume.
Where it falls short: Not point-and-click for advanced tuning. Recovery requires familiarity with cryptsetup.
Pricing: Free, part of Linux.
Platforms: Linux.
Where to get it: Installed by default on Ubuntu, Fedora, Arch. Enable at install.
Bottom line: The Linux answer to “how do I encrypt this drive.”
5. Cryptomator — best cloud drive encryption
Cryptomator is the app for anyone whose SSD content lives in Dropbox, Google Drive, or OneDrive. It encrypts client-side so the cloud provider stores ciphertext only. Mount a vault on the desktop, write to it as if it were any folder, and the encryption happens transparently. The mobile companions on Android and iOS unlock the same vaults.
Where it falls short: Not full-disk. Only what you put in a vault is encrypted.
Pricing: Free desktop, paid mobile clients around $10-15 one-time.
Platforms: Windows, macOS, Linux, Android, iOS.
Where to get it: cryptomator.org.
Bottom line: Pick Cryptomator when the sensitive data lives in a cloud drive rather than on the local SSD alone.
6. DiskCryptor — best Windows open source
DiskCryptor is the open-source alternative to BitLocker on Windows. It ships pre-boot authentication, full-disk encryption, and support for external drives. For anyone who wants a full-disk encryption tool that is not tied to Microsoft’s key management, DiskCryptor is the answer. The project went dormant for a stretch but has active maintenance again.
Where it falls short: No TPM integration comparable to BitLocker. Secure Boot integration takes some configuration.
Pricing: Free, open source.
Platforms: Windows.
Where to get it: diskcryptor.org.
Bottom line: Pick DiskCryptor when the Windows install is Home, or when BitLocker is not an option for policy reasons.
7. AxCrypt — best file-level, simple
AxCrypt takes the opposite approach from full-disk tools: encrypt individual files with one click, then decrypt them the same way. It integrates into the file manager, so encrypted files carry an icon overlay and open with a password prompt. AxCrypt Premium adds key sharing, so multiple users can access the same encrypted file with their own passphrases.
Where it falls short: Not for full-drive protection. If the laptop is stolen and the OS user is logged in, unencrypted files are exposed.
Pricing:
- Free: individual encryption
- Paid: $4/month Premium, $9/month Business
Platforms: Windows, macOS, Android, iOS.
Where to get it: axcrypt.net.
Bottom line: The pick when the goal is “these five files need protection,” not “the whole drive.”
8. GnuPG with Cryptsetup — best air-gapped
GnuPG combined with Cryptsetup is the air-gapped high-assurance option. Keys live on a hardware token or offline USB stick, encrypted with GnuPG, then Cryptsetup uses those keys to open a LUKS volume. The stack is more work to set up, but for a threat model where the key material must not touch an internet-connected device, it is the reference approach.
Where it falls short: Complex setup. Not for typical desktop use.
Pricing: Free, both projects open source.
Platforms: Linux primarily; GnuPG runs on Windows and macOS.
Where to get it: gnupg.org and the cryptsetup upstream.
Bottom line: The pick for the threat model where “cold storage of the key” is a real requirement.
How to pick
Start with the OS’s own tool: BitLocker on Windows Pro, FileVault on macOS, LUKS on Linux. Add VeraCrypt when the same policy has to span all three OSes on the same person’s machines. Reach for DiskCryptor on Windows Home, or when Microsoft’s key escrow is a non-starter. Layer Cryptomator on top when the sensitive data lives in cloud drives, and use AxCrypt for one-off file encryption. Only step up to GnuPG with Cryptsetup when the threat model requires air-gapping the key material entirely.
