Updated September 28, 2026 · ShieldCue Editorial Team
Keeper Secrets Manager vs Proton
Keeper Secrets Manager vs Proton: the differences
| Compare |  Keeper Secrets Manager |  Proton |
|---|---|---|
| Platforms | Windows, MacOS, Linux, Web vault, Browser extension (Chrome, Firefox, Safari, Edge, Opera, Brave), iOS, Android, Command line interface (Commander CLI, Secrets Manager CLI), KeeperChat, KeeperDB | Windows, MacOS, Linux, Android, iOS, Web app, Command line interface, Chrome, Safari, Firefox, Edge, Brave |
| Family plan | 5 private vaults, up to 5 users, 10 GB secure file storage | Pass Family: up to 6 users, includes 6 Pass Plus accounts and an admin panel |
| Security audit | SOC 2, ISO 27001/27017/27018, FIPS 140-3, FedRAMP High; quarterly third-party penetration testing | Independently audited by third-party experts (Cure53 audit published July 2023), open source under GPLv3, public bug bounty |
| Encryption | AES 256-bit plus elliptic-curve cryptography, zero-knowledge, device-level and record-level encryption | End-to-end encryption; 256-bit AES-GCM encrypted vaults; OpenPGP with ECC (Curve25519) for vault keys |
| Features | TOTP | Kill switch |
| Price from | Not confirmed | $4.99 |
| Open source | Not confirmed | Yes |
| Zero-knowledge encryption | Not confirmed | Yes |
Same on both: Free plan (Yes), Passkeys (Yes).
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Key differences
- Keeper Secrets Manager scores higher overall: 9.4 vs 9.3.
- Platforms: only Keeper Secrets Manager offers Web vault, Browser extension (Chrome, Firefox, Safari, Edge, Opera, Brave), Command line interface (Commander CLI, Secrets Manager CLI).
- Platforms: only Proton offers Web app, Command line interface, Chrome.
- Support channels: only Keeper Secrets Manager offers Phone.
- Pricing model: only Keeper Secrets Manager offers Budget.
- Features: only Keeper Secrets Manager offers TOTP.
- Features: only Proton offers Kill switch.
Our verdict on each
Keeper Secrets Manager
Keeper Secrets Manager suits households that want a free plan beside a paid tier, and buyers who read audit certificates before signing up.
Proton
Proton bundles a password manager, VPN and encrypted storage in one account, with Pass starting at $4.99 and a free tier. It suits readers who want passwords, private files and a VPN in a single subscription, and who can live with free plan limits that leave out an authenticator, password sharing and file attachments.
Score breakdown
| Area | Keeper Secrets Manager | Proton |
|---|---|---|
| Cost | 9.3Higher | 9.2Entry at $4.99 sits under the site median of €6.84, with storage at $95.88 per TB per year and a free plan. |
| Offer | 9.6Higher | 9.5 |
| Privacy | Not confirmed | 9.1 |
Availability and regulation
| Country | Keeper Secrets Manager | Proton |
|---|---|---|
| Headquarters | United States | Switzerland |
How they place
| Ranking | Keeper Secrets Manager | Proton |
|---|---|---|
| Password managers | 13 of 69 | 8 of 69 |
| Authenticator apps | 10 of 55 | 6 of 55 |
What we checked
Keeper Secrets Manager
- keepersecurity.com: 11 facts, checked September 26, 2026
Proton
- proton.me: 14 facts, checked September 26, 2026
- privacyjournal.net: 1 fact, checked September 26, 2026
Every fact side by side
| Fact | Keeper Secrets Manager | Proton |
|---|---|---|
| Pricing model | Free, BudgetCovers more | Free |
| Legal entity | Keeper Security, Inc. | Proton AG |
| Headquarters | United States | Switzerland |
| Founded | Not confirmed | 2014 |
| Support channels | Email, Chat, Phone, Help centre, CommunityCovers more | Email, Chat, Help centre, Community |
VPN
| Fact | Keeper Secrets Manager | Proton |
|---|---|---|
| Devices | Not confirmed | 10 |
| Server countries | Not confirmed | 140 |
| Features | Not confirmed | No logs, Streaming, Travel |
| Audience | Not confirmed | Business |
| Money-back period | Not confirmed | 30 days |
| Jurisdiction | Not confirmed | CH |
| Protocols | Not confirmed | WireGuard, OpenVPN |
| Streaming services | Not confirmed | Netflix, Amazon Prime Video, Disney+, Hulu |
| Owner | Not confirmed | Proton Foundation |
| Longest plan (months) | Not confirmed | 24 months |
Secure email
| Fact | Keeper Secrets Manager | Proton |
|---|---|---|
| Free plan limits | Not confirmed | Unlimited logins, notes, credit cards and devices; 10 hide-my-email aliases; passkeys and password health alerts; no 2FA authenticator, secure sharing, file attachments or dark web monitoring |
| End-to-end encryption | Not confirmed | All fields end-to-end encrypted: passwords, usernames, web addresses, credit cards, note contents and metadata; 256-bit AES-GCM vaults; only the user can decrypt, Proton cannot |
| Custom domains | Not confirmed | Yes |
Encrypted storage
| Fact | Keeper Secrets Manager | Proton |
|---|---|---|
| Free storage | Not confirmed | 5 |
| Price per TB per year | Not confirmed | $95.88 |
| Compliance certifications | Not confirmed | ISO 27001, SOC 2 Type II |
Where each stands against the rest
| Fact | Keeper Secrets Manager | Proton | Median |
|---|---|---|---|
| Price from | Not confirmed | $4.99below the median | $8 |
Median across 25 listed providers.
Pros and cons
Keeper Secrets Manager
Pros
- A free plan is available, and free and budget places Keeper in the free and budget segment, so a start costs nothing.
- Passkeys are supported and totp adds verification codes, covering the usual second factor inside the vault.
- Platforms span Windows, macOS and Linux, so the same account covers desktop, mobile, browser and command line.
Cons
- Its feature list is short, totp, so verification codes and passkeys are the extras rather than a wide menu.
- Plan capacity is fixed: the family plan includes 5 private vaults, up to 5 users, 10 GB secure file storage, so larger households plan around those limits.
- Budget buyers should compare tiers first: the site median entry price is €6.84 and the monthly median is €7.89.
Proton
Pros
- A single account covers a password manager, a VPN and end-to-end encrypted storage, with a free plan to start.
- Passkeys, custom domains and a Family plan with an admin panel suit single-user and shared use.
- Vaults use AES-GCM encryption with OpenPGP and ECC keys, and only the account holder can decrypt.
Cons
- Support runs on email, chat and help centre with no phone line.
- Free plan limits leave out the authenticator app, password sharing, attachments and dark web monitoring.
- Extra storage costs $95.88 per TB per year beyond 5 GB free.
Who each suits
Keeper Secrets Manager
Who it suits
- People who want to try before paying: the free plan is available, and free and budget puts Keeper in the free and budget segment.
- Mixed device households, since clients run for Windows, macOS and Linux.
- Buyers who check certifications first, given the SOC and ISO audits, FedRAMP High and quarterly third-party penetration testing.
Who should look elsewhere
- Total Password does not offer a free plan, so it suits people ready to pay from the start.
- Apple Inc. covers iOS, iPadOS and macOS, so it is the pick for Apple-only setups rather than the wider Windows, macOS and Linux.
- ESET Brasil covers Windows, Windows Server and macOS including Windows Server, a platform the Keeper list does not name.
Proton
Who it suits
- Readers who want a password manager, a VPN and private files under a single subscription rather than separate products.
- Households and small teams that need shared accounts, since the Family plan bundles several Pass Plus accounts and an admin panel.
- Buyers who care about open source under a copyleft licence, outside security audits and a public bug bounty.
Who should look elsewhere
- Apple Hide My Email at $0.99 if email aliasing is the whole job, since Proton adds a VPN, storage and a password manager.
- Apple Inc. at $0.99 when aliasing is the priority; Proton's $4.99 entry brings a VPN, storage and password manager in the same account.
- EasyOptOuts at $19.99 for a single higher priced subscription, against Proton's $4.99 entry and a free plan.
Current offers
Keeper Secrets Manager
Current offer
Free trial
30-day free trial: 30 days free
Personal and family plans, via get-keeper.html signup
Source, checked September 26, 2026
Proton
Current offer
Discount code
40% off Pass Plus: 40% off
Shown on the Proton Pass pricing page alongside a 30-day money-back guarantee; applies to the Pass Plus paid plan
Source, checked September 26, 2026
Questions about each
Keeper Secrets Manager
What does Keeper cost, and what do I pay at renewal?+
Keeper has a free plan, and free and budget places it in the free and budget segment, so entry can cost nothing. Across the site the median entry price is €6.84 and the monthly median is €7.89. Read your chosen tier's renewal figure too, since a long-term rate can differ from the first one.
Is Keeper independently audited, and who runs it?+
The operator, Keeper Security, Inc., is based in the United States. It publishes SOC and ISO certifications plus FedRAMP High, and it runs quarterly third-party penetration testing. Data is encrypted with AES and elliptic-curve cryptography at device and record level, so stored records stay readable to the account holder.
Proton
How much is Proton Pass at the entry price?+
Proton Pass starts at $4.99, and there is a free plan beside it. The paid tiers widen the set of features, so the entry price only pays off if you want more hide my email aliases, passkeys and password health alerts.
What does the free plan leave out?+
The free plan covers as many logins, notes, cards and devices as you like, but it leaves out the authenticator app, sharing with other people, file attachments and dark web monitoring. Those sit on paid Pass plans, where entry starts at $4.99.
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