GoReplay

aid: goreplay
name: GoReplay
description: GoReplay is an open source network traffic capture and replay tool, distributed as a single `gor` binary under
  LGPL-3.0, that records live HTTP traffic on a server and replays it against another environment for shadow testing, load
  testing with real production traffic, and debugging. It sits off the critical path rather than acting as a proxy, captures
  via libpcap without application changes, and can filter, rewrite or hand each message to external middleware before replay.
  A commercial GoReplay PRO edition ($2,950/year) adds Amazon S3 capture storage, binary protocol support, keep-alive TCP
  session recognition and dedicated support. GoReplay publishes no HTTP API of its own; its machine-readable contract is the
  CLI flag surface plus a documented middleware STDIN/STDOUT wire protocol.
type: Index
deliveryModel:
  model: open-core
  license: LGPL-3.0-only
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - pricing
  - docs
  generated: '2026-09-13'
  method: searched
  note: 'CORRECTED 2026-09-13. The prior derived block said model: saas, open_source: false, label ''Hosted service · you
    call their endpoint'' — wrong on all three counts. GoReplay is LGPL-3.0-only open source (LICENSE.txt, corroborated by
    the Homebrew formula metadata) with a paid proprietary PRO build governed by a separate EULA (COMM-LICENSE, licensor Replay
    Software LLC). There is no hosted service and no endpoint to call: both editions are binaries the customer runs on their
    own hosts, which is why callable_host stays false. The canonical open-core label says ''commercial hosted product''; for
    GoReplay the commercial half is a self-hosted PRO build, not a hosted service.'
accessModel:
  pricing: freemium
  onboarding: none
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: high
  source:
  - plans
  - pricing
  generated: '2026-09-13'
  method: searched
  note: Open-source edition is free and needs no account, key or registration — onboarding is simply installing the binary.
    GoReplay PRO is a flat $2,950/year licence bought self-serve through Paddle with no advertised time-limited trial; the
    provider positions the OSS edition as the evaluation path. public:false records that there is no publicly callable API,
    not that the software is unavailable.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/goreplay.png
tags:
- API Testing
- HTTP Traffic
- Load Testing
- Network Capture
- Open Source
- Traffic Replay
tags_raw:
- API Testing
- HTTP Traffic
- Load Testing
- Network Capture
- Open Source
- Traffic Replay
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/goreplay/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-09-13'
specificationVersion: '0.23'
apis:
- aid: goreplay:goreplay-tool
  name: GoReplay
  description: GoReplay captures live HTTP traffic with libpcap and replays it against a test target, letting teams validate
    deploys, configuration changes and infrastructure changes against real production traffic patterns without touching production.
    Operated entirely through the `gor` command line; there is no hosted endpoint and no API base URL.
  humanURL: https://goreplay.org
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/goreplay.png
  properties:
  - type: Documentation
    url: https://goreplay.org/docs/
  - type: GettingStarted
    url: https://goreplay.org/docs/installation/
  - type: GitHubOrganization
    url: https://github.com/probelabs/goreplay
  - type: CLI
    url: cli/goreplay-cli.yml
  tags:
  - API Testing
  - Load Testing
  - Open Source
  - Traffic Replay
  tags_raw:
  - API Testing
  - Load Testing
  - Open Source
  - Traffic Replay
  - Open-Source
  x-baseURL-note: No baseURL. GoReplay ships no hosted API — the software runs on the customer's own hosts and never calls
    a vendor endpoint. Recorded as genuinely absent rather than guessed from the domain.
common:
- type: FinOps
  url: finops/goreplay-finops.yml
- type: Website
  url: https://goreplay.org
- type: Documentation
  url: https://goreplay.org/docs/
- type: GettingStarted
  url: https://goreplay.org/docs/installation/
- type: GitHubOrganization
  url: https://github.com/probelabs/goreplay
- type: Support
  url: https://github.com/probelabs/goreplay/issues
- type: Blog
  url: https://goreplay.org/blog/
- type: Pricing
  url: https://goreplay.org/pro/
- type: TermsOfService
  url: https://github.com/probelabs/goreplay/blob/master/COMM-LICENSE
- type: CLI
  url: cli/goreplay-cli.yml
- type: Packages
  url: packages/goreplay-packages.yml
- type: LLMsTxt
  url: llms/goreplay-llms.txt
- type: ChangeLog
  url: changelog/goreplay-changelog.yml
- type: Lifecycle
  url: lifecycle/goreplay-lifecycle.yml
- type: Conventions
  url: conventions/goreplay-conventions.yml
- type: Conformance
  url: conformance/goreplay-conformance.yml
- type: Plans
  url: plans/goreplay-plans-pricing.yml
- type: RateLimits
  url: rate-limits/goreplay-rate-limits.yml
- type: DomainSecurity
  url: security/goreplay-domain-security.yml
- type: UsageTerms
  url: terms/goreplay-terms-of-service.yml
- type: Eligibility
  url: eligibility/goreplay-eligibility.yml
- type: DataLicense
  url: data-license/goreplay-data-license.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-13'
  status: enriched
  artifacts_added: 9
  pass: local-v3