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Geslar
Zero-knowledge password manager — no account, no cloud, free
Password manager with a simple premise: your PM shouldn't know anything about you. No account (not even email), no cloud, no telemetry. AES-256-GCM + PBKDF2 600K iterations. Built by a CISO out of professional frustration. Free forever. Croatian + English.
Hey Product Hunt!
I'm Daniel, a CISO and IT infrastructure lead from Croatia. I built Geslar because every password manager I evaluated for work required something I wasn't willing to give: my email, my data on someone else's server, or a subscription.
What makes Geslar different:
- NO ACCOUNT — you don't even need an email to use it
- NO CLOUD — your vault lives on your device, nowhere else
- NO TELEMETRY — zero analytics, zero tracking, zero knowledge
- FREE — not freemium, actually free (all features, no limits)
Security model:
- AES-256-GCM encryption
- PBKDF2-SHA256 with 600,000 iterations
- Shadow DOM isolation for autofill
- CSP protection
- Master key exists only in RAM
Bonus: passphrase generator from 5,700+ Croatian words across 8 regional dialects. "krava-čokolada-tramvaj-oblak" is easier to remember than "M@rk0_2024!" and takes 4 trillion years to brute force.
The ecosystem:
1. geslar.app — web generator + password checker (HIBP)
2. Škrinjar — browser extension (Chrome, Firefox, Edge, Opera)
3. Ključar — standalone TOTP/HOTP authenticator (iOS/Android)
Available in Croatian and English. EU infrastructure (Hetzner, Germany) planned for cloud sync in the future.
I'd love your feedback — especially on the security model. Happy to answer any questions.
About Geslar on Product Hunt
“Zero-knowledge password manager — no account, no cloud, free”
Geslar was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #38 on the daily leaderboard. Password manager with a simple premise: your PM shouldn't know anything about you. No account (not even email), no cloud, no telemetry. AES-256-GCM + PBKDF2 600K iterations. Built by a CISO out of professional frustration. Free forever. Croatian + English.
On the analytics side, Geslar competes within Browser Extensions, Privacy and Security — topics that collectively have 18.9k followers on Product Hunt. The dashboard above tracks how Geslar performed against the three products that launched closest to it on the same day.
Who hunted Geslar?
Geslar was hunted by Daniel Legin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Geslar including community comment highlights and product details, visit the product overview.
Daniel Legin