Best Open Source Alternatives to 1Password in 2026

1Password costs $3-8/user/month. For a 50-person team, that's $4,800/year for encrypted key-value storage. Open source password managers are mature, audited, and — in the case of Bitwarden — used by millions. Here's what to switch to.

TL;DR

Bitwarden is the best 1Password alternative — period. Full-featured, cross-platform, audited, and free to self-host via Vaultwarden. KeePassXC is the offline-first option for individuals. Passbolt is purpose-built for team credential sharing.

Key Takeaways

Bitwarden/Vaultwarden covers everything — browser extensions, mobile apps, auto-fill, secure sharing, TOTP, and passkeys
Vaultwarden (community Bitwarden server) unlocks premium features for free when self-hosted
KeePassXC is best for individuals who want offline-only, no-cloud password storage
Passbolt is designed specifically for team credential sharing with granular permissions
All are security-audited — Bitwarden has regular third-party audits; KeePassXC uses the battle-tested KDBX format

The Comparison

Feature	1Password	Bitwarden	KeePassXC	Passbolt
Price	$3-8/user/mo	Free (OSS)	Free (OSS)	Free (OSS)
Self-hosted	No	Yes (Vaultwarden)	Local files	Yes
Browser extension	✅	✅	✅	✅
Mobile app	✅	✅	Via KeePassDX	❌ (web)
Desktop app	✅	✅	✅ (best)	❌
Auto-fill	✅	✅	✅	Browser only
Passkeys	✅	✅	❌	❌
TOTP	✅	✅ (premium/VW)	✅	❌
Secure sharing	✅	✅ (Send)	❌	✅ (best)
Team management	✅	✅	❌	✅
SSO/SCIM	✅	Enterprise	❌	✅
Audit trail	✅	✅	❌	✅
Emergency access	✅	✅	❌	❌
Offline access	✅	✅	✅ (always)	❌

1. Bitwarden / Vaultwarden

The complete password manager — self-hostable.

GitHub: Bitwarden 16K+ stars, Vaultwarden 42K+ stars
Stack: C# (official) / Rust (Vaultwarden)
License: AGPL-3.0 (Bitwarden) / AGPL-3.0 (Vaultwarden)
Deploy: Docker

Bitwarden is the open source password manager most people should use. The official cloud service is affordable ($10/year for premium), but self-hosting via Vaultwarden (a community Rust implementation of the Bitwarden server) unlocks all premium features for free — including TOTP, file attachments, emergency access, and organizations.

Vaultwarden runs on a Raspberry Pi. It's a single Docker container using ~50MB RAM.

Self-Hosting with Vaultwarden

docker run -d --name vaultwarden \
  -v /vw-data/:/data/ \
  -p 80:80 \
  -e SIGNUPS_ALLOWED=false \
  -e ADMIN_TOKEN=your-admin-token \
  vaultwarden/server:latest

All official Bitwarden clients (browser extensions, mobile apps, desktop apps) work with Vaultwarden — just point them to your server URL.

Best for: Everyone. Individuals, families, teams. The most complete open source password manager available.

2. KeePassXC

Offline-first, local-only password storage.

GitHub: 22K+ stars
Stack: C++, Qt
License: GPL-2.0+
Deploy: Desktop app (no server)

KeePassXC stores passwords in an encrypted local file (KDBX format). No server, no cloud, no account — your passwords exist only on your device. Sync via any file sync service (Dropbox, Syncthing, Nextcloud) if needed.

Standout features:

Fully offline — no internet required, ever
KDBX 4 format (AES-256, Argon2 key derivation)
Browser integration via KeePassXC-Browser
SSH agent integration
TOTP support built-in
Auto-Type for desktop applications
YubiKey/hardware key support
Cross-platform (Windows, macOS, Linux)

Best for: Individuals who want maximum security with zero cloud dependency, security professionals, offline environments.

3. Passbolt

Team credential sharing done right.

GitHub: 5K+ stars
Stack: PHP (CakePHP), JavaScript
License: AGPL-3.0
Deploy: Docker, packages, manual

Passbolt is different — it's built specifically for teams sharing credentials. Instead of a vault for one person, it's a shared credential store with granular permissions, groups, and audit logs. Think "1Password Teams" specifically.

Standout features:

End-to-end encrypted (OpenPGP based)
Granular sharing permissions (per credential, per group)
User and group management
Audit logs (who accessed what, when)
Browser extension for auto-fill
REST API for automation
LDAP/AD directory sync
MFA enforcement

Best for: Teams that share credentials (DevOps secrets, shared accounts, client credentials), organizations with compliance requirements.

Cost Comparison

Scenario	1Password	Vaultwarden	KeePassXC
Individual	$36/year	$0 (local) or $5/mo VPS	$0
Family (5)	$60/year	$5/month (VPS)	$0
Team (10)	$480/year	$5/month	N/A
Business (50)	$4,800/year	$10/month	N/A

Decision Guide

Choose Bitwarden/Vaultwarden if:

You want the most complete 1Password replacement
You need cross-platform with mobile apps
You want team sharing and organizations
You want TOTP, passkeys, and emergency access

Choose KeePassXC if:

Offline-only security is non-negotiable
You don't want any cloud component
You're an individual user or small family
You want SSH agent integration

Choose Passbolt if:

Team credential sharing is the primary use case
You need audit trails for compliance
LDAP/AD integration is required
Granular per-credential permissions matter

Migrating from 1Password to Bitwarden

The practical migration from 1Password to Bitwarden is one of the smoother password manager transitions available. Both tools use similar conceptual models (vaults, items, organizations), and Bitwarden's import system handles 1Password exports directly. The full migration takes most users under an hour.

Export from 1Password. In 1Password's desktop app, navigate to File → Export and select the 1PIF format or the 1Password Unencrypted Export (CSV) format. The 1PIF format preserves more metadata (custom fields, one-time passwords, attachments) than CSV. Export each vault separately if you have multiple vaults. Store the exported file on an encrypted volume or in a RAM disk during the transfer — it contains your plaintext credentials.

Deploy Vaultwarden. If you're self-hosting, set up your Vaultwarden instance before importing. The Docker command in the section above takes five minutes. For a family or team, run Vaultwarden on a low-cost VPS. The $5/month Hetzner CX11 handles Vaultwarden comfortably for dozens of users — the resource requirements are minimal. Point Caddy at port 80 and you have HTTPS handled automatically.

Import into Bitwarden. In the Bitwarden web vault, go to Tools → Import Data. Select "1Password (1PIF)" from the format dropdown and upload your export file. Bitwarden maps 1Password login items, secure notes, credit cards, and identities to their Bitwarden equivalents. Custom fields transfer intact. Attachments require manual re-upload — download them from 1Password first.

Verify the import. After importing, spot-check 20-30 items across different categories: logins with TOTP, secure notes, credit cards, and any items with custom fields. Pay particular attention to logins where you store TOTP seeds — verify that the TOTP codes generate correctly in Bitwarden's mobile app.

Configure browser extensions and mobile apps. Install the Bitwarden browser extension (Chrome, Firefox, Safari, Edge) and point it to your Vaultwarden server URL in the extension settings. Do the same for the iOS and Android apps. Self-hosted configuration just requires entering your server URL in the "Server URL" field during login — all official Bitwarden clients support custom server URLs.

Run in parallel briefly. Keep 1Password active for one to two weeks while the team validates the Bitwarden migration. Use Bitwarden as the primary tool but keep 1Password available as a fallback. Cancel 1Password after the parallel period. For a detailed walkthrough of the full migration process, the 1Password to Bitwarden migration guide covers edge cases and team organization setup in depth.

Security Architecture: How These Tools Protect Your Credentials

Understanding how each tool's security model works helps you make a better choice — and helps you explain the choice to skeptical colleagues or managers who default to "1Password is the industry standard."

Bitwarden's zero-knowledge architecture. Bitwarden encrypts all vault data client-side before it ever leaves your device. The encryption key is derived from your master password using PBKDF2 (or Argon2 in newer versions) with a high iteration count. Even if someone gained access to Bitwarden's servers (or your self-hosted Vaultwarden database), they would see only opaque encrypted blobs. The server never sees your master password or your decrypted vault data. This architecture has been validated by multiple independent security audits — Bitwarden commissioned a comprehensive security audit from Cure53 in 2023, and the results are public.

Vaultwarden and the trust model. When you self-host Vaultwarden, you move the trust boundary from Bitwarden's cloud to your own infrastructure. This is either a security improvement (if your operational security is strong) or a security regression (if you don't maintain your server well). Running Vaultwarden with automated security updates, regular backups, proper firewall rules, and strong authentication is straightforwardly achievable. Running it on a neglected VPS without updates or monitoring is worse than using Bitwarden cloud.

KeePassXC's local-only model. KeePassXC's security model is the simplest to reason about: your credentials are in a file on your device, encrypted with AES-256 and Argon2. There is no server, no network, no sync infrastructure. The attack surface is limited to the device where the database file lives. The tradeoff is that you manage sync yourself — if your device is lost or fails without a backup, your credentials are gone.

Passbolt's OpenPGP approach. Passbolt's end-to-end encryption uses OpenPGP rather than AES. Each credential is encrypted to the public keys of the users who should have access. This means sharing a credential with a new team member involves re-encrypting it to include their public key — more computationally involved than Bitwarden's shared vault approach, but cryptographically explicit about who holds the decryption keys. For teams with formal compliance requirements around credential access, Passbolt's audit trail and per-credential permission model maps cleanly to access control policies.

The common thread across all four tools is that they are all substantially more transparent about their security architecture than 1Password. 1Password's security white paper is public, but the codebase is not. Bitwarden, KeePassXC, and Passbolt are all open source — their security claims can be independently verified by anyone with the time and expertise to audit the code. For security-conscious teams, this auditability is itself a meaningful security property. If your team is also auditing your infrastructure security posture, the open source alternatives to HashiCorp Vault are worth examining for secrets management at the infrastructure layer beyond end-user credentials.

Team Rollout: Getting Everyone onto Vaultwarden

The most common failure mode in password manager migrations is technical success followed by organizational failure — the tool is set up and working, but half the team continues using browser-saved passwords or spreadsheets because the migration wasn't managed carefully.

A successful team rollout has three phases: infrastructure setup, data migration, and behavioral change. The first two are technical; the third is organizational and requires more deliberate effort than most technical teams expect.

Preparation. Before announcing the migration to the full team, verify the core experience end-to-end yourself: create an account, install the browser extension on Chrome and Firefox, install the mobile app on both iOS and Android, add a few test credentials, verify autofill works on common websites, and test TOTP code generation for a service that uses two-factor authentication. Discovering that the mobile app's autofill doesn't work on iOS until you enable it in system settings is something you want to find out during preparation, not when half the team is asking why it isn't working.

Enabling organization features. If you're migrating a team, enable Vaultwarden's organization features in the admin panel and create an organization for your company. Organizations in Bitwarden/Vaultwarden allow you to share credential collections with team members without giving them access to your personal vault. Create collections that map to your team structure: a "Shared Infrastructure" collection for server credentials, a "Marketing" collection for shared marketing accounts, a "Development" collection for API keys and service accounts. Assign team members to collections with the appropriate access level — read-only for credentials they shouldn't modify, read-write for credentials they manage.

The migration communication. Send a clear communication explaining why you're migrating, what the timeline is, what they need to do, and where to get help. Include a brief video or screenshot guide showing the three steps: create an account, install the extension, import existing passwords. Set a specific deadline for the migration ("By end of next week, we will disable access to our old LastPass account") rather than leaving it open-ended. Open-ended migrations accumulate stragglers indefinitely.

The total rollout process for a 20-person team, managed well, takes about one week: three days for individuals to migrate at their own pace, two days to follow up with stragglers, one final verification that everyone is logged into Vaultwarden and their browser extension is active. The operational security improvement — moving from scattered browser-saved passwords and LastPass/1Password to a self-hosted, auditable credential store — is substantial relative to the one week of coordination effort. Teams building out a broader self-hosted security infrastructure will find that Vaultwarden pairs naturally with an identity provider for SSO and with a remote work stack that centralizes authentication across all internal tools.

Compare open source password managers on OSSAlt — security features, platform support, and team capabilities side by side.

See open source alternatives to 1password on OSSAlt.

The SaaS-to-Self-Hosted Migration Guide (Free PDF)