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Cybersecurity · head to head

Bitwarden vs Cilium

Bitwarden logo

Bitwarden

Cybersecurity

Open source password management for everyone

From
Free
Rated
-
Full reviewWebsite
Cilium logo

Cilium

Cloud

eBPF-based networking, observability and security for Kubernetes

From
Free
Rated
-
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; Cilium requires a recent Linux kernel, which rules out older distributions and some managed environments
  • They diverge on capability: Bitwarden covers Unlimited password storage, Cilium covers eBPF datapath.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Bitwarden and Cilium actually diverge.

Attributes where Bitwarden and Cilium differ
AttributeBitwardenCilium
Pricing modelfreemiumOpen source, no licence fee
PlatformsWindows, Macos, Linux, Ios, Android, Web, CliKubernetes, Linux
CategoryCybersecurityCloud
Founded2016Unknown

Identical on both: starting price (Free), 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 Cilium

  • eBPF datapath
  • Identity-based policy
  • Hubble observability
  • Sidecar-free mesh

What people use each for

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

Bitwarden

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

Cilium

  • Kubernetes networking at a scale where iptables-based CNI performance degradesnot Bitwarden
  • Network policy expressed on workload identity rather than fragile IP rulesnot Bitwarden
  • Seeing which services actually talk to each other, and what policy is droppingnot 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

Cilium

  • Requires a recent Linux kernel, which rules out older distributions and some managed environments
  • eBPF is genuinely hard to debug when it misbehaves, and the skill is rare on most teams
  • Broad scope — CNI, policy, mesh, observability — means the learning curve covers several domains at once

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

Cilium

Free
  • CiliumFree
    • Full functionality
    • No usage limits
    • Community support

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 Cilium if

  • You need ebpf datapath.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want identity-based policy.
Cilium review

Questions people ask

Is Bitwarden or Cilium better?
Neither clearly leads. Bitwarden starts at Free and Cilium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bitwarden or Cilium?
Bitwarden starts at Free and Cilium at Free.
Does Bitwarden or Cilium run on more platforms?
Bitwarden runs on Windows, Macos, Linux, Ios, Android, Web, Cli. Cilium runs on Kubernetes, Linux.
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 Cilium is typically brought in for.
What can Bitwarden do that Cilium cannot?
Bitwarden covers Unlimited password storage, Cross-platform sync, Secure password sharing, Password generator. Cilium covers eBPF datapath, Identity-based policy, Hubble observability, Sidecar-free mesh.

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
Cilium: Is Cilium free?

Yes, open source and CNCF-graduated. Isovalent sells an enterprise distribution and support.

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
Cilium: What does eBPF change?

It lets Cilium run packet-processing programs inside the kernel instead of relying on iptables rule chains, which behave poorly as the number of services grows.

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
Cilium: Does Cilium replace a service mesh?

It can cover much of what a mesh does without sidecars, though full mesh feature sets still favour Istio or Linkerd.

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