Show HN: Opbox – CRDT based sync for text files on disk

6 hours ago

Opbox is a real-time sync daemon for plaintext files using CRDTs to merge concurrent edits.
It supports end-to-end encryption via S2 log, can be self-hosted, and works with any text editor.
Use cases include sharing Obsidian/Logseq vaults and syncing repo changes between git commits.
Files are synced at the filesystem level, ignoring binary files and non-UTF-8 content.
Built in Rust with open-source libraries like S2, Turso, Yjs, and turmoil for testing.
Differences from Syncthing/Dropbox: merges edits via CRDT diffs instead of creating conflict copies.
FAQ covers topics like P2P vs. shared log, offline functionality, safety, and cost.

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