1Password vs KeePassXC Comparison

• Individual (annual): $47.88/year
• Families (up to 6 users, annual): $71.88/year

Penetration test and code review of the 1Password system

First-level security certification of KeePassXC 2.7.9 on Windows — full source-code review, penetration testing of every security function, and cryptographic and random-number-generator analysis

Data is encrypted with AES-GCM-256. The vault key is derived from your account password using PBKDF2-HMAC-SHA256 at 650,000 iterations, then combined with a 128-bit Secret Key that never leaves your devices — so an attacker who guesses the password alone still cannot decrypt anything. Authentication uses SRP, so password-equivalent data is never sent to the server.

The database is encrypted with AES-256 by default (Twofish and ChaCha20 are also selectable) in the KDBX 4 format, with an HMAC-SHA-256 integrity check that detects tampering. The master key is derived with Argon2d by default — a memory-hard function that resists GPU and ASIC cracking — with the older AES-KDF still available. The composite master key can combine a password, a key file, and a YubiKey or OnlyKey challenge-response secret.

AgileBits Inc., a Canadian company headquartered in Toronto, Ontario. Venture-funded — Accel and ICONIQ Growth both hold board seats. Founded 2005; roughly 1,400 employees.

Volunteer, community-run open-source project under the keepassxreboot organization on GitHub — no company and no venture funding behind it. Development is paid for by donations. Forked from KeePassX in 2016; the KeePass lineage goes back to 2003.