Mimiri Notes
Open-source end-to-end encrypted notes with encrypted subtree sharing and a permanent free tier
Visit Mimiri Notes
mimiri.ioAbout Mimiri Notes
Mimiri Notes is an end-to-end encrypted note app that treats encrypted sharing as a first-class feature rather than an enterprise add-on: you can share a single note or a whole branch of the tree with several trusted people, and every change inside that subtree syncs between participants while staying decryptable only by them. Everything is AES-GCM-256 encrypted on your device before it leaves, so neither the vendor, its servers nor your ISP can read it, and the whole codebase is open source under GPLv2 so the security claims are inspectable. The organising model is a tree with no distinction between folders and notes — any note can hold both content and sub-notes, nesting without limit, with search to narrow the tree quickly. Practical hardening goes further than most: a PIN code gates the running app, the window hides itself from screen-sharing software to prevent accidental exposure, passwords are hidden from onlookers and cameras, and the app can auto-lock after a period of disuse. Clients exist for Windows, Linux, macOS, Android, iOS and the web, all syncing in real time with a local offline copy and automatic conflict resolution. The free tier is explicitly not a trial. The company behind it is innonova GmbH, and downloads are published for every supported platform alongside a browser client that needs no install at all.
Does ChatGPT recommend your AI tool?
If you're building in Security & Privacy, run a free AI-visibility scan on your own product — we ask ChatGPT across 5 prompt angles and score how often you get named. ~30 seconds, no signup, no card.
Key Features
Tags
Is Mimiri Notes your tool?
This is the page buyers and AI assistants read when they look up Mimiri Notes. Claim your listing for $19 one-time — no subscription, nothing to cancel — and take a capped slot in your category: each one sells a fixed number, and yours ranks above every free tool in it, with a Featured badge. Prefer it ongoing? Monthly is one click away on the next page.
Complete Your AI Tool Stack
Other ai tool tools in our catalog:
Gamma
Try FreeAI presentation builder
Turn ideas into polished decks instantly
AdCreative.ai
Try FreeAI-powered ad creatives
Generate marketing visuals in seconds
SEMrush
Try FreeAll-in-one SEO toolkit
Optimize content for maximum reach
💰 Affiliate disclosure: We may earn a commission if you sign up through these links at no extra cost to you.
Stay updated on Security & Privacy tools — join our weekly newsletter
One concise email with fresh launches, trending picks, and featured standouts.
Alternatives to Mimiri Notes
View all Mimiri Notes alternatives →More Security & Privacy tools
Pipelock
Apache-2.0 agent firewall that mediates MCP, HTTP and WebSocket egress and emits Ed25519-signed decision receipts anyone can verify offline
Stashbase
Secrets control plane that lets coding agents call authenticated APIs through a host-scoped proxy without ever seeing the credential values
Certly
SSL, domain-expiry, DNS and DNSSEC monitoring that checks what your server actually serves, free for 2 sites and $10/month for 25
Nen
End-to-end encrypted API payloads using post-quantum ML-KEM-768, so logs, CDNs and proxies see only ciphertext after TLS terminates
NonaGuard
200+ automated Odoo security and health checks producing a Pulse Score and a client-ready PDF, no SSH needed
Offsend
Open-source .offsend.yml policy plus runtime gates that keep sensitive files out of AI coding-agent context
Agent connectivity: not yet verified