Memento
Encrypted notes, passwords & links. Only you hold the keys.
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This is 1 of 135 launches in note-taking and writing apps — see how it stacks up on momentum and crowding →
181 other launches read as similar to this one →
Details
- External ID
- 1276844
- Source
- PH
- Company
- —
- Product
- Memento
- Website domain
- producthunt.com
- Launched
- Oct. 12, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.33
- Tags
- Productivity, Notes, Privacy
Description
Memento is a privacy-first workspace for notes, passwords, bookmarks and AI prompts. Notes, vault items, prompts and attachments are encrypted on your device with XChaCha20-Poly1305 before they sync, so our servers never see that content in plaintext. One app instead of three: Markdown editor, credential vault and smart link previews. Free during public beta. Next up: Claude-powered semantic search, summaries and tag suggestions that run on client-decrypted content.
Enrichment
- Niche
- note-taking and writing apps
- Vertical
- Security
- Function
- Workflow automation
- Audience
- Prosumer
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- end-to-end encrypted notes and password manager
- Manually corrected
- False
Could you build this?
Partial The note-taking and password UI is straightforward, but implementing robust zero-knowledge client-side cryptography, cross-device sync, and conflict resolution without security flaws requires cryptographic domain expertise.
What it would actually take: The architecture requires client-side cryptography (libsodium/XChaCha20-Poly1305) with secure key derivation (Argon2id), paired with a blind sync backend using CRDTs or operational transforms for conflict resolution. The hard part is ensuring zero-knowledge guarantees remain airtight across client updates, key rotations, secure enclaves/keychain integration, and offline synchronization without leaking metadata. A security auditor or experienced cryptographer is needed to ensure the cryptographic primitives and key management are correctly implemented.
Competitors
Other products that read as similar to this one — 181 launches clear the similarity bar, closest 8 shown.
Attention rank: #95 of 182 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 332 days after the earliest competitor.
- NotepadWeb - Private Encrypted Notes · ph · 2026-10-06 · 1 upvotes · similarity 0.57
- Classified · ph · 2026-09-10 · 1 upvotes · similarity 0.53
- Lyunotes · ph · 2026-09-30 · 1 upvotes · similarity 0.53
- Digital Diary · ph · 2026-09-15 · 1 upvotes · similarity 0.49
- Online Clipboard · ph · 2026-09-13 · 1 upvotes · similarity 0.48
- Calculator note Vault · ph · 2026-10-03 · 1 upvotes · similarity 0.48
- Sealby · ph · 2026-09-22 · 2 upvotes · similarity 0.47
- Zipperhide · ph · 2026-10-13 · 1 upvotes · similarity 0.45
Other launches for this product
- No other launches for this product.