# cavaliergopher/grab

A download manager package for Go

Repository: https://github.com/cavaliergopher/grab
Canonical: https://ross.abutalabs.com/products/cavaliergopher-grab
Language: Go
License: BSD-3-Clause
License Family: permissive
Topics: golang, download-manager
Last push: 2026-08-23T03:17:11+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 3893, "days_push": 10, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1483, forks 148 (observed 2026-08-28T04:04:51.247836+00:00)

## What it is
Grab is a Go package for downloading files from the internet with features like concurrent progress monitoring, auto-resume of incomplete downloads, checksum validation, and rate limiting. It also ships an optional command-line downloader built on the same library.

## Use cases
- download files from urls in go
- resume interrupted downloads programmatically
- download thousands of files concurrently
- validate downloaded files with checksums
- limit download bandwidth with a rate limiter
- monitor download progress in a go application

## When to choose
- you need robust batch downloading of large, immutable remote files in Go
- you want auto-resume, checksum validation, and progress tracking out of the box
- you need context-based cancellation of downloads

## When to avoid
- you need a full-featured GUI or browser download manager
- your downloads require complex authentication flows or dynamic content
- you are not working in Go

## Facets
- artifact type: library
- maturity: active
- function: http-client, file-system
- domain: developer-tools, files, web-development
- platform: go, cross-platform
- tags: download-manager, file-download, resume-downloads, rate-limiting, checksum-validation, concurrent-downloads

## Member repositories
- cavaliergopher/grab (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:51.247836+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 2026-08-30T04:34:02.344874+00:00, confidence not recorded.
  - readme: https://github.com/cavaliergopher/grab (fetched 2026-08-28T04:04:51.247836+00:00, sha 9b95c47c057e)
- Data as of 2026-08-30T08:39:29.467469+00:00.