18.2
LocalStack simulates cloud environments on customer infrastructure so developers and AI agents can validate cloud applications before deployment.
Free planOpen sourceWebAPIExtension
Best Service Virtualization Software in 2026
When development or testing depends on services that are not always available or easy to reproduce, service virtualization offers ways to simulate their behavior. Compare database and messaging virtualization, record and replay, and stateful simulation to see which capabilities fit the dependencies you need to represent. Fault injection and deployment model add further distinctions, while free-plan availability and…
27.9
Beeceptor is a developer-focused API simulation platform for creating mocks, virtualizing services, testing contracts, and simulating failures.
Free planWebAPILinux
37.6
WebAPILinux
- 4
Microcks
Microcks is a free, open-source tool for mocking and testing APIs and microservices.
Free planWebAPIExtensionLinux7.2Free plan - 5
Hoverfly
Hoverfly Cloud is a hosted API simulation and mocking service for development and testing that should not rely on live API dependencies.
WebAPILinuxmacOS6.7From $10 a month - 6
MockServer
MockServer is free, self-hosted software for mocking and proxying HTTP, HTTPS, and gRPC services in isolated, deterministic testing.
Free planWebAPILinuxmacOS6.6Free plan - 7
Automic Continuous Delivery Automation
Automic Continuous Delivery Automation orchestrates application releases and deployments, with real-time monitoring and release reporting.
WebAPILinuxSelf-hosted6.5 - 8
BlazeMeter
BlazeMeter is an enterprise continuous testing platform for performance, functional, and API testing.
WebAPIExtensionLinux6.5From $99 a year - 9
WireMock
WireMock simulates APIs and software dependencies, letting teams test without relying on those services, explore edge cases, and develop dependent features in parallel.
Free planWebAPILinuxSelf-hosted6.4Free plan - 10
Amazon Aurora
Amazon Aurora is a fully managed relational database service offering PostgreSQL, MySQL, and DSQL engines.
Free planAPI6.3Free plan - 11
Wilma
Wilma is a self-hosted tool for developing and testing applications that rely on other services.
Free planWebSelf-hosted6.3Free plan - 12
Azurite
Azurite is a free, open-source server emulator for trying Azure Storage APIs in a local environment.
Free planExtensionLinuxmacOSSelf-hosted6.2Free plan - 13
DynamoDB Local
DynamoDB Local lets developers build and test applications without connecting to the DynamoDB web service.
Free planAPILinuxmacOSSelf-hosted6.1Free plan - 14
Traffic Parrot
Traffic Parrot simulates APIs, services, and systems so teams can test applications and microservices in isolation.
WebAPILinuxmacOS6.0 - 15
mountebank
mountebank is a free, self-hosted tool for developers who need applications to work against test doubles rather than real dependencies.
Free planAPILinuxSelf-hosted5.8Free plan - 16
Cavisson NetOcean
Cavisson NetOcean simulates backend applications and third-party systems so development and testing teams can test without relying on those systems.
WebAPISelf-hosted5.6 - 17
Servirtium
Servirtium records HTTP interactions during tests and replays them from saved files, allowing playback without calling the real service.
APILinuxmacOSSelf-hosted5.5 - 18
Azure Cosmos DB Emulator
Free planLinuxWindows5.4Free plan - 19
Parasoft Virtualize
WebLinuxmacOSWindows5.3 - 20
OpenText Service Virtualization
OpenText Service Virtualization is a self-hosted tool for service virtualization, database testing, and test data management.
WebLinuxWindows5.2 - 215.1