Fiddler vs Busymate DevTools:
Fiddler Everywhere is the modern, cross-platform successor to Fiddler Classic, with session sharing and an MCP integration of its own. The difference is where the traffic lives.
Fiddler Everywhere runs on Windows, macOS and Linux, captures from any device on the same network including phones and smart TVs, and ships rules for modifying headers, redirecting and changing responses, breakpoints, a composer, saved session snapshots you can share, and both a Fiddler MCP and an in-app debugging assistant. Fiddler Classic remains free for non-commercial use on Windows only. Busymate DevTools captures on the phone itself and streams every source into one hosted feed with roles, an audit trail and a real-device farm.
Built for the phone,
Compare the complete workflow: where capture runs, how you share access, and how you automate debugging.
Capture from iPhone, Android, Chrome, the proxy, and your phone farm in one place. Teammates see requests from devices they own or have been granted access to.
454 MCP tools let your agent inspect captured traffic and act within your role. Destructive actions require confirmation.
A rack of real Android and iOS devices you mirror, tap and script from the browser — or from a sentence typed to the agent.
Permissions are enforced in the database, actions are recorded in an audit trail, and the dashboard and API cannot reveal stored vault secrets.
The same questions,
Our column lists only what has shipped. Their column rests on what we read on their own public pages — anything we could not confirm is marked, not guessed.
- Included
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Facts about Fiddler were read on its public product, pricing and documentation pages on 2026-09-01. If something has changed, tell us and we will correct the page. Report a correction
When Fiddler is the right pick
Plenty of teams should keep using Fiddler. These are the cases where we would tell you to.
You want a native desktop app on all three platforms
Fiddler Everywhere is a real Windows, macOS and Linux application with a composer, rules editor and saved sessions — a complete desktop workflow.
You capture from TVs, consoles and other devices
Anything on the same network can be pointed at Fiddler — smart TVs, consoles, embedded boxes — which an on-device mobile app cannot cover.
You need a vendor with commercial support
Progress offers tiered support with response-time commitments on Pro and Enterprise. If a support contract is a requirement, that matters.
Questions people ask
Both have MCP — what is different?
Fiddler MCP exposes the desktop app's inspection data to an AI assistant, and a built-in assistant lets you chat with your LLM in the tool. Busymate DevTools' MCP surface covers the whole hosted dashboard — every device, the farm, settings — and gates every write behind your confirmation.
How does each capture from a phone?
Fiddler Everywhere captures from a phone on the same network as the computer running it, with a dedicated Android capture option. Busymate DevTools runs as an app on the iPhone or Android device and captures through a local VPN with no computer nearby.
Is Fiddler still free?
Fiddler Classic is free for non-commercial use, Windows only and in maintenance mode. Fiddler Everywhere is a subscription from $7 per user per month billed annually. Busymate DevTools is free to install; its paid tiers are still a published draft.
How do teams share traffic in each?
Fiddler Everywhere saves session snapshots you store, reload and share. Busymate DevTools has no snapshot step for the everyday case — teammates with the right role are already looking at the same live feed — and snapshots exist for the moments you want a frozen copy.
See your own traffic
Follow the setup guide for your capture source, then open a request in the dashboard. HTTPS decryption requires certificate trust and a supported client.