# jewel/clearskies

Open source btsync clone

Repository: https://github.com/jewel/clearskies
Canonical: https://ross.abutalabs.com/products/clearskies
Language: Ruby
License Family: other
Last push: 2014-12-09T06:02:14+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4736, "days_push": 4285, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1410, forks 50 (observed 2026-08-28T04:04:38.824660+00:00)

## What it is
ClearSkies is an open-source file synchronization program inspired by BitTorrent Sync, allowing direct peer-to-peer sharing between computers without a monthly fee. It defines an open, auditable sync protocol with encrypted connections, read-only sharing, and subtree/shallow copy support, with a Ruby proof-of-concept implementation.

## Use cases
- sync files between my computers without paying for dropbox
- self-hosted alternative to bittorrent sync
- share folders directly between peers without a cloud server
- open source file sync with an auditable protocol
- read-only folder sharing between machines
- encrypted peer-to-peer file synchronization

## When to choose
- you want a free, self-hosted, serverless file sync between your own devices
- you need an open, auditable sync protocol instead of a proprietary one
- you want to experiment with or build on an open p2p sync protocol

## When to avoid
- you need a maintained, production-ready sync tool - development stopped around 2014
- you want polished clients for Windows, Android, or iOS
- you need anonymity or protection against active man-in-the-middle attacks during share setup

## Facets
- artifact type: application
- maturity: abandoned
- function: file-system, networking, cryptography, p2p
- domain: files, privacy, networking, self-hosted
- platform: cross-platform, ruby
- tags: file-sync, bittorrent-sync-clone, dropbox-alternative, open-protocol, peer-to-peer, ruby, linux

## Member repositories
- jewel/clearskies (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:38.824660+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:38:28.615807+00:00, confidence not recorded.
  - readme: https://github.com/jewel/clearskies (fetched 2026-08-28T04:04:38.824660+00:00, sha 4b0dd14a0880)
- Data as of 2026-08-30T08:39:29.467469+00:00.