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SPECIFICTION
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ReadyAPI vs Thunder Client

ReadyAPI

smartbear.com

Thunder Client

thunderclient.com

Side by side

FigureReadyAPIThunder Client
Price from—$3/mo
Free plan—Yes
Free trialYesYes
Open source——
WebYes—
WindowsYesYes
macOSYesYes
LinuxYesYes
APIYes—
Self-hostedYes—
Plans published134
Spec score · API clients9.2 (#4)8.4 (#16)
Spec score · API Development Tools8.9 (#6)8.0 (#21)
Spec score · API Testing Tools8.8 (#7)7.9 (#22)
Free planNoYes
HeadquartersSomerville, Massachusetts, United StatesIreland (EU)
ProtocolsSupported technologies include REST, SOAP, GraphQL, JSON, XML, JDBC, JMS, MQTT, CoAP, WebSockets and Apache Kafka.Paid plans include WebSocket, SSE, and gRPC support.
What it doesReadyAPI is an on-premise platform for functional, security, performance and virtualization testing of APIs in CI/CD workflows.Thunder Client is a lightweight REST API client for testing APIs inside VS Code and JetBrains IDEs.

Plans

ReadyAPI

  • ReadyAPI Test - 1-Year LicensePrice not published
  • ReadyAPI Test - 2-Year LicensePrice not published
  • ReadyAPI Test - 3-Year LicensePrice not published
  • ReadyAPI Performance - SmallPrice not published
  • ReadyAPI Performance - MediumPrice not published
  • ReadyAPI Performance - UnlimitedPrice not published
  • ReadyAPI Virtualization - 1-Year LicensePrice not published
  • API & Service Virtualization$1,415 a year
  • API Functional & Security Testing$3,207 a year
  • API Performance Testing Small$7,389 a year

ReadyAPI pricing →

Thunder Client

  • FreeFree
  • Starter$3 a month
  • Business$7 a month
  • Enterprise$16 a month

Thunder Client pricing →

In their own words

ReadyAPI

ReadyAPI has no write-up on Specifiction yet; its figures are above.

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Thunder Client

Thunder Client is a REST API client that runs inside VS Code and JetBrains IDEs. It lets users build, test and share API collections with a team, and validate responses through a graphical interface without scripts. Requests and client data are stored locally, with no cloud sync; collections can also be saved to a Git repository for collaboration. Paid plans add WebSocket, SSE and gRPC support, as well as the CLI and CI/CD integration, where CI/CD collection runs are unlimited. Starter includes 250 local collection runs per user monthly, Business 500, and Enterprise unlimited. Enterprise also connects to Azure Key Vault and AWS Secrets Manager and can store environment values encrypted; Free, Starter and Business store those values in plain text. The extension collects basic anonymized telemetry, which can be disabled in VS Code settings. The maker says it does not collect personal or request data. A 14-day trial is available by request to business email addresses. Paid plans are billed annually per user: Starter is $3/user/mo, Business $7/user/mo and Enterprise $16/user/mo.

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