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httpmon vs Proxyman

The Best Open-Source
Proxyman Alternative

HTTPS interception, gRPC decoding, scripting — without the subscription or the GUI requirement.

View on GitHub Install httpmon

Why switch from Proxyman to httpmon?

Proxyman is polished, but it costs $49–99/year, barely runs on Linux, and needs a desktop. httpmon gives you the same core debugging in your terminal — free, works over SSH, and you get vim keys instead of clicking through menus.

Feature Comparison

Feature httpmon Proxyman
Price Free (MIT) $49–99/year
Open source ✅ Full source on GitHub ❌ Proprietary
Terminal-native ✅ Runs in terminal ❌ GUI only (macOS/Windows)
Vim keybindings ✅ Full vim navigation ❌ Mouse-driven
Linux support ✅ Native binary ⚠️ Limited (CLI only)
HTTPS interception ✅ Auto CA certs ✅ One-click setup
gRPC decoding ✅ Built-in ✅ Built-in
Protobuf decoding ✅ Built-in ✅ Built-in
HAR export ✅ ✅
JavaScript scripting ✅ JS hooks ✅ Scripting tool
Network throttling ✅ Built-in presets ✅ Network conditions
MCP server (AI) ✅ --mcp flag ✅ Built-in MCP
Diff view ✅ Side-by-side ✅ Diff tool
Map Local ✅ ✅
SSH/headless servers ✅ Works over SSH ❌ Requires display
CI/CD integration ✅ Scriptable CLI ❌ GUI-dependent
Memory usage Low (~20 MB) Moderate (~100 MB)
Subscription required No — free forever Yes — annual renewal

What makes httpmon different

No subscription

Proxyman costs $49–99/year and locks advanced features behind paid plans. httpmon ships everything for free under the MIT license.

Works over SSH and in CI

SSH into a server, run httpmon, debug traffic. Works in Docker containers and CI pipelines too. Proxyman needs a desktop.

Vim keybindings

Filter, inspect, diff, and export with keystrokes. If you spend your day in a terminal, you don't have to switch contexts to debug HTTP.

Open source

Read the code, audit it, fork it. You can see exactly what's happening with your traffic — it's not going through a proprietary binary.

Try it

One command. MIT license.

$ brew install kostyay/tap/httpmon
← Back to httpmon.dev

FAQ

Frequently Asked Questions

Is httpmon free unlike Proxyman?

MIT license, every feature included. Proxyman charges $49–99/year and gates features behind paid tiers.

Does httpmon work on Linux? Proxyman barely does.

Native Go binary, works on Linux arm64 and amd64. Also works over SSH, in Docker, in CI — anywhere with a terminal.

Can httpmon run over SSH on remote servers?

That's one of the main advantages over GUI proxies. SSH in, run httpmon, debug. No display server, no X forwarding, no VNC.

Does httpmon support gRPC and gRPC-Web like Proxyman?

gRPC, gRPC-Web, and Protobuf decoding are all built in. Pass --proto-path for field names, or httpmon decodes the raw wire format automatically.

Can I script request/response modifications?

JavaScript hooks — onRequest() and onResponse(). Similar to Proxyman's Scripting Tool but you write plain JS functions.