BloomRPC Extended vs GripMock

BEBloomRPC Extended8.5Visit GripMock8.0Visit

Higher score BE BloomRPC Extended #4 in gRPC Tools 8.5/10 Free plan Free plan✓ 2 of 6 features Visit BloomRPC

vs

GripMock #8 in gRPC Tools 8.0/10 Open source ✓ 4 of 6 features Visit GripMock

• BloomRPC Extended fits best

  Free desktop users needing complete RPC coverage

• GripMock fits best

  Teams building sophisticated self-hosted gRPC mocks

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Side by side

Feature	BEBloomRPC Extended 8.5/10 Visit ↗	GripMock 8.0/10 Visit ↗
At a glance
Editor score	8.5	8.0
Ranking	#4 in gRPC Tools	#8 in gRPC Tools
Best for	Free desktop users needing complete RPC coverage	Teams building sophisticated self-hosted gRPC mocks
Pricing model	Free	Free
Starting price	Free plan	Open source
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Desktop	Cloud, Self-hosted, Desktop, Browser extension
Platforms	Windows, macOS, Linux	Web, Windows, macOS, Linux
Built for	Solo, Small business	Small business, Mid-market, Enterprise
Features BloomRPC Extended 2/6 · GripMock 4/6
gRPC-Web support	✓	✓
Server reflection	✓	✓
Mock server	Not checked yet	✓ (best)
Protobuf editor	Not checked yet	Not checked yet
Load testing	Not checked yet	Not checked yet
CI integration	Not checked yet	✓ (best)
Specs
Deployment model	Desktop	Self_hosted
Our review
Pros	Supports unary, server-streaming, client-streaming, and bidirectional calls Includes gRPC-Web, reflection, TLS/SSL, metadata, and environments Runs on Windows, macOS, and Linux as open-source desktop software	Mocks unary and all three gRPC streaming modes Supports schema validation, flexible matching, errors, and delays Includes REST, web UI, Docker, GitHub Actions, and gateway support
Cons	Does not provide verified testing features Does not include CI workflows Lacks mocking and load-testing features	Requires a self-hosted deployment model Stub definitions are configured in YAML or JSON Focused on gRPC services rather than broader API testing
Our verdict	BloomRPC Extended is an open-source desktop GUI client for developers who explore and query gRPC services. It covers native unary, server-streaming, client-streaming, and bidirectional RPC calls, while also supporting gRPC-Web. The… Read the review →	GripMock is an open-source gRPC mock server for developers and QA teams working with service contracts and automated tests. It can load APIs from .proto files, compiled protobuf descriptors, Buf Schema Registry modules, or live gRPC server… Read the review →

Strengths and trade-offs

• BloomRPC Extended — where it wins

  • Supports unary, server-streaming, client-streaming, and bidirectional calls
  • Includes gRPC-Web, reflection, TLS/SSL, metadata, and environments
  • Runs on Windows, macOS, and Linux as open-source desktop software

  Where it doesn't

  • Does not provide verified testing features
  • Does not include CI workflows
  • Lacks mocking and load-testing features

• GripMock — where it wins

  • Mocks unary and all three gRPC streaming modes
  • Supports schema validation, flexible matching, errors, and delays
  • Includes REST, web UI, Docker, GitHub Actions, and gateway support

  Where it doesn't

  • Requires a self-hosted deployment model
  • Stub definitions are configured in YAML or JSON
  • Focused on gRPC services rather than broader API testing

• BEBloomRPC Extended8.5/10 · Free plan

  A free, open-source desktop client with broad gRPC and gRPC-Web coverage.

  Visit BloomRPCFull verdict →
• GripMock8.0/10 · Open source

  A capable self-hosted gRPC mock server for complex streaming and CI workflows.

  Visit GripMockFull verdict →