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Tech riderRev. 4 Oct 2026

Mediator

Ch 117.0of 27 Web Debugging Proxies
  1. 1Runs onLinux, Mac, Windows
  2. 2CostsFree plan
  3. 3Platformsdesktop
3 lines stated Written from the maker's own pages: github.com
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The Mediator homepage

Overview

Mediator is ranked #11 of 27 in web debugging proxies on Specifiction. It runs on Linux, macOS, Windows. There is a free plan.

Mediator plans and pricing

All plans
Free Free Cross-platform GUI gRPC debugging proxy · Apache-2.0 licensed github.com · 4 Oct 2026

Compared on web debugging proxies

Platforms
desktopgithub.com

Facts

Purpose
Mediator is a cross-platform GUI proxy for debugging gRPC traffic.github.com · 4 Oct 2026
Host rewrite
It can redirect requests to beta or test servers without changing client code.github.com · 4 Oct 2026
Protobuf decoding
It parses gRPC request and response messages and can render binary messages as a JSON tree when an API schema is available.github.com · 4 Oct 2026
HTTPS inspection
It can decode gRPC/HTTPS requests when a server rule matches, using a Mediator root certificate installed in the client.github.com · 4 Oct 2026
Certificate handling
Each installation generates its own root certificate, available in DER and PEM formats, and a different installation requires reinstalling its certificate.github.com · 4 Oct 2026
Schema sources
Mediator supports gRPC server reflection, proto source roots compiled with protoc, and FileDescriptorSet files as API schema sources.github.com · 4 Oct 2026
Client examples
The README gives proxy setup examples for Java, Objective-C/iOS, and Go clients.github.com · 4 Oct 2026
Proxy default
When the app opens, its proxy server listens on port 8888 by default.github.com · 4 Oct 2026
Desktop downloads
The project lists Windows MSI, macOS DMG, Apple Silicon macOS DMG, and Linux deb distributions.github.com · 4 Oct 2026
Desktop framework
The project says it uses Netty for the proxy protocol, Compose Desktop for the GUI, and Sisyphus as the Protobuf runtime.github.com · 4 Oct 2026
License
The repository identifies its license as Apache-2.0.github.com · 4 Oct 2026
Intended users
The repository describes the product as a gRPC debugging proxy and provides setup instructions for developers configuring gRPC clients.github.com · 4 Oct 2026

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Where it ranks on Specifiction

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Sources