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Cybersecurity · head to head

Bitwarden vs Keil MDK

Bitwarden logo

Bitwarden

Cybersecurity

Open source password management for everyone

From
Free
Free plan
Yes
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Bitwarden the integrated TOTP authenticator, encrypted file attachments, vault health reports and Emergency Access are all withheld from the free plan and need Premium at $1.65 per month; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Bitwarden and Keil MDK actually diverge.

Attributes where Bitwarden and Keil MDK differ
AttributeBitwardenKeil MDK
PlatformsWindows, Macos, Linux, Ios, Android, Web, CliWeb
CategoryCybersecurityDeveloper Tools
Founded2016Unknown

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Bitwarden

  • Unlimited password storage
  • Cross-platform sync
  • Secure password sharing
  • Password generator
  • Two-factor authentication
  • Encrypted file attachments
  • Vault health reports
  • Emergency access

Only in Keil MDK

Nothing recorded that Bitwarden does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Bitwarden

  • Personal password managementnot Keil MDK
  • Team credential sharingnot Keil MDK
  • Enterprise securitynot Keil MDK
  • Compliance requirementsnot Keil MDK
  • Developer secrets managementnot Keil MDK

Keil MDK

  • Embedded software developmentnot Bitwarden
  • ARM microcontroller programmingnot Bitwarden
  • Professional development environmentsnot Bitwarden

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Bitwarden

  • The integrated TOTP authenticator, encrypted file attachments, vault health reports and Emergency Access are all withheld from the free plan and need Premium at $1.65 per month
  • Free accounts can share vault items with one other Bitwarden user and no more
  • File storage is capped at 5 GB on Premium and 5 GB personal plus 5 GB family on the Families plan
  • Two-step login accepts up to 10 hardware security keys per account
  • The Families plan is capped at 6 people, so a seventh member means moving to a Teams subscription at $4 per user per month

Keil MDK

  • Pricing for Essential and Professional subscriptions not disclosed on primary site
  • Customers must contact Arm Developer Tools store for subscription rates

Pricing, plan by plan

Bitwarden

Free
  • FreeFree
    • Basic password management
    • Zero-knowledge encryption
    • Advanced two-step login
  • Premium$1.65/month
    • Integrated authenticator
    • File attachments
    • Emergency access
  • Premium$19.8/year
  • Families$3.99/month
    • Up to 6 premium accounts
    • Unlimited sharing and collections
    • Organization storage included

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose Bitwarden if

  • You need unlimited password storage.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Web, Cli.
  • You also want cross-platform sync.
Bitwarden review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Bitwarden or Keil MDK better?
Neither clearly leads. Bitwarden starts at Free and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bitwarden or Keil MDK?
Bitwarden starts at Free and Keil MDK at Free.
Does Bitwarden or Keil MDK run on more platforms?
Bitwarden runs on Windows, Macos, Linux, Ios, Android, Web, Cli. Keil MDK runs on Web.
Can I use Bitwarden for free?
Both have a free tier, so you can try either at no cost before committing.
What is Bitwarden best used for?
Bitwarden is most often used for personal password management, team credential sharing, enterprise security, compliance requirements. Of those, personal password management and team credential sharing are not what Keil MDK is typically brought in for.
What can Bitwarden do that Keil MDK cannot?
Bitwarden covers Unlimited password storage, Cross-platform sync, Secure password sharing, Password generator.

Answered from the vendors’ own pages

Bitwarden: Does Bitwarden have a free plan?

Yes, Bitwarden offers a free tier with basic password management, zero-knowledge encryption, advanced two-step login, and unlimited devices across browser, mobile, and desktop apps.

Source
Keil MDK: Does Keil MDK have a free version?

Yes, Keil MDK Community Edition is free for non-commercial projects. Essential and Professional editions are available as monthly or annual subscriptions.

Source
Bitwarden: How much does Bitwarden Premium cost?

Bitwarden Premium costs $1.65 per month billed annually at $19.80 per year, including integrated authenticator, file attachments, emergency access, and security reports.

Source
Keil MDK: How much do Keil MDK paid editions cost?

Specific pricing for Essential and Professional editions is not published on the main site. Rates are available from the Arm Developer Tools store or by contacting Arm sales.

Source
Bitwarden: What is the difference between Bitwarden Teams and Enterprise?

Teams plan at $4 per user per month (annual billing) includes centralized ownership and secure credential sharing. Enterprise at $6 per user per month adds granular access control, passwordless SSO, account recovery, self-hosting, and complimentary Families plans for all users.

Source
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