# NebulousLabs/Sia

Blockchain-based marketplace for file storage. Project has moved to GitLab: https://gitlab.com/NebulousLabs/Sia

Repository: https://github.com/NebulousLabs/Sia
Canonical: https://ross.abutalabs.com/products/sia
Homepage: https://sia.tech
Language: Go
License: MIT
License Family: permissive
Topics: cloud, blockchain, decentralized, distributed, sia, storage
Archived: true
Last push: 2018-11-01T16:59:59+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4338, "days_push": 2862, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2695, forks 434 (observed 2026-08-28T04:07:11.157121+00:00)

## What it is
Sia is a decentralized, blockchain-based peer-to-peer cloud storage marketplace where users rent storage from hosts, with files encrypted and sharded across the network. This GitHub repository is the original Go implementation, which has since moved to GitLab and been superseded by newer Sia software (renterd, hostd, walletd).

## Use cases
- store files on a decentralized cloud storage network
- rent out spare disk space and earn siacoin
- run a sia storage node
- encrypt and distribute files across a p2p network
- avoid centralized cloud providers like AWS S3
- build applications on a blockchain storage marketplace

## When to choose
- you want censorship-resistant, encrypted cloud storage without a central provider
- you want to earn cryptocurrency by hosting storage for others
- you need a self-hosted alternative to Dropbox or S3 backed by a blockchain
- you are studying decentralized storage protocol design

## When to avoid
- you need a simple managed cloud storage service with a polished app
- you want active development on GitHub - the project moved to GitLab and newer Sia software lives elsewhere
- you cannot tolerate cryptocurrency payments or blockchain complexity
- you need guaranteed low-latency or high-throughput object storage

## Facets
- artifact type: application
- maturity: maintenance
- function: object-storage, cryptography, networking, cli
- domain: cloud-computing, blockchain, privacy, self-hosted, files
- platform: windows, go, cross-platform
- tags: decentralized-storage, blockchain, p2p-storage, encrypted-storage, siacoin, distributed-network, linux, macos

## Member repositories
- NebulousLabs/Sia (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:11.157121+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 2026-08-30T02:16:19.482201+00:00, confidence not recorded.
  - readme: https://github.com/NebulousLabs/Sia (fetched 2026-08-28T04:07:11.157121+00:00, sha 77f2d50250a7)
  - homepage: https://sia.tech (fetched 2026-08-29T09:59:26.000053+00:00, sha 2b37c29de82e)
  - site_page: https://sia.tech/about (fetched 2026-08-29T09:59:26.005010+00:00, sha 207c9edba4f8)
  - site_page: https://docs.sia.tech (fetched 2026-08-29T09:59:26.002914+00:00, sha 6e34d9f1a177)
  - site_page: https://sia.tech/support (fetched 2026-08-29T09:59:26.006816+00:00, sha 8c72a484f05d)
- Data as of 2026-08-30T08:39:29.467469+00:00.