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Head-to-head · gRPC Tools

Kreya vs grpcui

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Kreya #2 in gRPC Tools 9.2/10 Free plan · 10-day trial Free planFree trial✓ 0 of 6 features Visit Kreya
grpcui #5 in gRPC Tools 8.3/10 Open source Free plan✓ 1 of 6 features Visit grpcui

Kreya leads on 0 checks, grpcui on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreKreya · 9.2/10
  • Free planboth
  • Free trialonly Kreya
  • Most featuresgrpcui · 1 of 6

Kreya scores higher on our rubric for grpc tools: 9.2 against 8.3 out of 10; our editors rank them #2 and #5.

Kreya is the better fit for teams wanting broad API testing and CI workflows. grpcui is the better fit for developers wanting a browser-based gRPC client.

  • Kreya fits best

    Teams wanting broad API testing and CI workflows

  • grpcui fits best

    Developers wanting a browser-based gRPC client

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Kreya 9.2/10 Visit ↗ grpcui 8.3/10 Visit ↗
At a glance
Editor score 9.2 8.3
Ranking #2 in gRPC Tools #5 in gRPC Tools
Best for Teams wanting broad API testing and CI workflows Developers wanting a browser-based gRPC client
Pricing model Free plan + paid Free
Starting price $5/user/mo Open source
Free plan ✓ ✓
Free trial 10 days —
Deployment Desktop Self-hosted, Desktop
Platforms Windows, macOS, Linux Web, macOS, Linux
Support Email, Community Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Kreya 0/6 · grpcui 1/6
gRPC-Web support Not checked yet Not checked yet
Server reflection Not checked yet ✓ (best)
Mock server — Not checked yet
Protobuf editor Not checked yet Not checked yet
Load testing Not checked yet Not checked yet
CI integration Not checked yet Not checked yet
Specs
Deployment model Not checked yet Desktop
Our review
Pros
  • Supports gRPC, REST, GraphQL, WebSocket, and Server-Sent Events
  • Imports OpenAPI, GraphQL, protobuf, and gRPC reflection definitions
  • Runs headless CLI tests with JUnit reports in CI/CD
  • Discovers services through reflection, .proto files, or protosets
  • Builds dynamic forms for protobuf messages, maps, and oneofs
  • Supports plaintext, TLS, mutual TLS, metadata, and response details
Cons
  • The Free plan includes only the latest request history
  • Scripting, collections, snapshot testing, and the full CLI require Pro
  • Desktop-first workflow may not suit teams seeking a browser-based client
  • Bidirectional streaming RPC methods have limitations
  • Focused on request exploration rather than automated testing
  • Requires a command-line application to serve the local browser UI
Our verdict

Kreya is a desktop API client for developers and teams working across gRPC, REST, GraphQL, WebSocket, and Server-Sent Events APIs. It supports API definition imports, environment-based request configuration, authentication management,…

Read the review →

grpcui is an open-source command-line application that serves a browser-based interface for interacting with gRPC servers. It is aimed at developers who need to inspect services and compose requests without relying only on manually…

Read the review →
  1. KreyagRPC Tools 9.2Free plan · 10-day trial
  2. grpcuigRPC Tools 8.3Open source

Strengths and trade-offs

  • Kreya — where it wins

    • Supports gRPC, REST, GraphQL, WebSocket, and Server-Sent Events
    • Imports OpenAPI, GraphQL, protobuf, and gRPC reflection definitions
    • Runs headless CLI tests with JUnit reports in CI/CD

    Where it doesn't

    • The Free plan includes only the latest request history
    • Scripting, collections, snapshot testing, and the full CLI require Pro
    • Desktop-first workflow may not suit teams seeking a browser-based client

  • grpcui — where it wins

    • Discovers services through reflection, .proto files, or protosets
    • Builds dynamic forms for protobuf messages, maps, and oneofs
    • Supports plaintext, TLS, mutual TLS, metadata, and response details

    Where it doesn't

    • Bidirectional streaming RPC methods have limitations
    • Focused on request exploration rather than automated testing
    • Requires a command-line application to serve the local browser UI
  • Kreya9.2/10 · Free plan · 10-day trial

    A broad desktop API client for gRPC, REST, GraphQL, WebSocket, and SSE workflows.

    Visit KreyaFull verdict →
  • grpcui8.3/10 · Open source

    A focused open-source client for exploring gRPC requests through a local browser UI.

    Visit grpcuiFull verdict →

More comparisons

All gRPC tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update