# Particular/NServiceBus

The gold standard for async .NET microservices on Azure, AWS and on-prem

Repository: https://github.com/Particular/NServiceBus
Canonical: https://ross.abutalabs.com/products/nservicebus
Homepage: https://particular.net/nservicebus/
Language: C#
License: NOASSERTION
License Family: other
Topics: nservicebus, c-sharp, distributed-systems, messaging
Last push: 2026-08-26T12:48:33+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 96, longevity 100
- inputs: {"age_days": 5779, "days_push": 7, "days_rel": 28, "gap_med": 0, "n_releases_24m": 44}
- 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 2168, forks 644 (observed 2026-08-28T04:06:21.500295+00:00)

## What it is
NServiceBus is a .NET messaging framework for building distributed systems and async microservices, providing abstractions over message queues like Azure Service Bus, Amazon SQS/SNS, RabbitMQ, and SQL Server. It includes saga-based long-running process orchestration, retries, recoverability, persistence integrations, and OpenTelemetry observability as part of the Particular Service Platform.

## Use cases
- build async .NET microservices with message queues
- orchestrate long-running business processes with sagas
- publish and subscribe to events across multiple endpoints
- handle failed messages with automatic retries and error queues
- run message-driven services on Azure, AWS, or on-premises
- monitor and debug distributed .NET systems
- deploy messaging endpoints to containers or serverless

## When to choose
- you are building distributed .NET systems that need reliable async messaging
- you want saga orchestration and recoverability out of the box
- you need commercial support and mature tooling for enterprise workloads
- you use Azure Service Bus, Amazon SQS/SNS, or RabbitMQ transports

## When to avoid
- your project requires a permissive open-source license (RPL 1.5 with paid production licensing)
- you are not on the .NET ecosystem
- you need a lightweight or free message broker abstraction without commercial licensing costs
- throughput or endpoint limits of the pricing tiers do not fit your budget

## Facets
- artifact type: framework
- maturity: stable
- function: message-queue, microservices, workflow-automation, monitoring, middleware, rpc
- domain: microservices, backend, developer-tools
- platform: dotnet, cloud, serverless, windows, cross-platform
- tags: sagas, service-bus, enterprise-messaging, commercial-license, azure-service-bus, amazon-sqs, rabbitmq, retries, outbox, particular-service-platform, messaging, docker, linux

## Member repositories
- Particular/NServiceBus (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:21.500295+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 2026-08-30T02:49:29.428619+00:00, confidence not recorded.
  - readme: https://github.com/Particular/NServiceBus (fetched 2026-08-28T04:06:21.500295+00:00, sha 3c401d155657)
  - homepage: https://particular.net/nservicebus/ (fetched 2026-08-29T10:29:45.612627+00:00, sha 9f18edf53c15)
  - site_page: https://docs.particular.net (fetched 2026-08-29T10:29:45.622177+00:00, sha 23d5c1ec6226)
  - site_page: https://docs.particular.net/ (fetched 2026-08-29T10:29:45.634113+00:00, sha 23d5c1ec6226)
  - site_page: https://particular.net/learn/getting-started (fetched 2026-08-29T10:29:45.635870+00:00, sha 2a5e37df2fb1)
  - site_page: https://particular.net/about (fetched 2026-08-29T10:29:45.637594+00:00, sha ae4243641952)
  - site_page: https://particular.net/pricing (fetched 2026-08-29T10:29:45.624674+00:00, sha c46e898ad57a)
  - site_page: https://particular.net/pricing/definitions (fetched 2026-08-29T10:29:45.627181+00:00, sha f03ddbb1b9ff)
  - site_page: https://particular.net/pricing/faq (fetched 2026-08-29T10:29:45.629207+00:00, sha 03fa97bbe817)
  - site_page: https://particular.net/pricing/small-business-program (fetched 2026-08-29T10:29:45.631770+00:00, sha 971ea1dfb8e1)
- Data as of 2026-08-30T08:39:29.467469+00:00.