# facebook/wdt

Warp speed Data Transfer (WDT)  is an embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths.

Repository: https://github.com/facebook/wdt
Canonical: https://ross.abutalabs.com/products/wdt
Homepage: https://www.facebook.com/WdtOpenSource
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-06-26T12:38:39+00:00

## Health v2 (maintenance only)
Score: 63/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 89, release rhythm 8, longevity 100
- inputs: {"age_days": 4423, "days_push": 68, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2956, forks 400 (observed 2026-08-28T04:07:32.166629+00:00)

## What it is
Warp speed Data Transfer (WDT) is an embeddable C++ library and command line tool for transferring files between two systems as fast as possible over multiple parallel TCP connections. It is designed to be hardware-limited rather than latency-limited, with minimal dependencies and low CPU/memory overhead.

## Use cases
- transfer large directory trees between servers at maximum speed
- copy files over multiple TCP paths in parallel
- move datasets between datacenter machines quickly
- embed fast file transfer into another C++ application
- replace scp/rsync for bulk transfers on fast networks

## When to choose
- you need maximum throughput for bulk file transfers between trusted systems
- you want a lightweight, dependency-free transfer tool or embeddable library
- your network has multiple paths or high bandwidth where parallel TCP connections help

## When to avoid
- you need encrypted or authenticated transfers over untrusted networks
- you need incremental sync of changed files like rsync
- you need a cross-platform GUI or Windows-native tool

## Facets
- artifact type: library
- maturity: maintenance
- function: file-system, networking, cli, concurrency
- domain: developer-tools, files, networking, performance
- platform: cpp, cli
- tags: data-transfer, tcp, parallel-transfer, high-throughput, file-sync, command-line, linux, macos

## Member repositories
- facebook/wdt (main) score 63

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:32.166629+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 2026-08-30T07:32:13.247671+00:00, confidence not recorded.
  - readme: https://github.com/facebook/wdt (fetched 2026-08-28T04:07:32.166629+00:00, sha 761cfa6cd810)
- Data as of 2026-08-30T08:39:29.467469+00:00.