ObsidianVault
Your server can't read your files. That's the point.
What it does
Drop a file. Your browser encrypts it with AES-256-GCM before it touches any server. Get a link. Send the link. Recipient clicks, browser decrypts, done. The server stores ciphertext only -- it mathematically cannot read your files. No accounts. No cookies. No tracking. Single Python file, stdlib only, self-hostable. Built because a GP receptionist split my medical records across 5 unencrypted emails. Healthcare is Australia's most-breached sector for 14 straight reporting periods. Free.
Does the same job
all alternatives →- OSOpen-source obsidian.md sync server2023 · ▲416
https://github.com/acheong08/obsidian-sync Hello HN, I'm a recent high school graduate and can't afford $8 per month for the official sync service, so I tried my hand at replicating the server. It's still missing a few features, such as file recovery and history, but the basic sync is working. To the creators of Obsidian.md: I'm probably violating the TOS, and I'm sorry. I'll take down the repository if asked. It's not ready for production and is highly inefficient; Not competition, so I hope you'll be lenient.
- CDCryptexVault – Decentralized Password Manager2023 · cryptex-vault.com · ▲11
Hi everyone! We started working on this project last year because a password manager that we used was being sold to another company and stopped offering their service. We were not happy with the alternatives that were available so we decided to give it a shot and build our own. We are now at a point where we have a working Beta and are looking for some feedback from the community. The main idea is to have data synchronization without a central server (single point of failure). When you create a Vault (inside which you can store your credentials and other sensitive data), you can "Link" it to…
- CMCc-md – Zero-cost Obsidian sync across iPhone, Mac, and GitHubFeb 2026 · github.com · ▲8
Here's something I realized: the most AI-native knowledge base isn't a SaaS product with an API. It's a folder of markdown files on your disk. Obsidian stores everything as plain .md files. That means Claude Code (or any AI tool) can grep, read, write, and traverse your entire knowledge base with zero setup. No API keys. No OAuth. No middleware. Just local file I/O. The only missing piece was sync. I wanted my vault on iPhone (iCloud), on Mac (local), and on GitHub (backup + version history) — without paying $4/mo for Obsidian Sync. cc-md is ~400 lines of bash. iCloud handles Apple…
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