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Fiddler Everywhere
Burlington, Massachusetts, United States
What it is
Fiddler Everywhere captures, inspects, modifies, and replays HTTP/S traffic across applications, services, and devices. Users can capture through a system proxy, network, browser, or terminal, then work with protocols including HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, and Protobuf. Tools let users compose API requests, replay traffic, set breakpoints, and create rules that change requests and responses. Its MCP server connects to coding assistants and agent-powered IDEs, with documented setup for VS Code, Cursor, Claude Code, GitHub Copilot CLI, and Codex CLI. Output sanitization can remove sensitive information before data is shared with a model. The product is intended for developers, QA staff, and support engineers. Desktop downloads are listed for Windows 10 and 11, macOS 11 or later on Intel or Apple Silicon, and Ubuntu 20 or later. A 10-day trial is available. Listed plans include Lite at $10/user/mo billed monthly, Pro at $19/user/mo billed monthly, and Enterprise at $37/user/mo billed annually. Enterprise features include managed installation and configuration, SSO, and offline mode.
For and against
For
- Capture modes include system proxy, network, browser, and terminal.
- Supports WebSocket inspection and traffic replay.
- Rules can modify requests and responses.
- Enterprise includes SSO and offline mode.
Against
- The trial lasts 10 days.
- Lite costs $10/user/mo billed monthly.
- Listed desktop downloads require Windows 10+, macOS 11+, or Ubuntu 20+.
The verdict
Fiddler Everywhere combines traffic capture and editing tools with integrations for coding assistants. It offers a 10-day trial, while paid plans are billed per user monthly or annually.
Who it suits
It suits developers, QA staff, and support engineers who need to inspect or alter HTTP/S traffic. Teams using coding assistants may also value the MCP connection and output sanitization.
Plans and prices
Lite
Essential features · 10 licenses per purchase · 5 support tickets per user per year · 72h response
Read 2 Oct 2026 · telerik.com
Lite
Essential features · 10 licenses per purchase · 5 support tickets per user per year · 72h response
Read 2 Oct 2026 · telerik.com
Pro
Full features · Rules and team collaboration · Unlimited purchase licenses · Lite support: up to 10 tickets per month, 72h response
Read 2 Oct 2026 · telerik.com
Pro
Full features · Rules and team collaboration · Unlimited purchase licenses · Lite support: up to 10 tickets per month, 72h response
Read 2 Oct 2026 · telerik.com
Enterprise
Everything in Pro · Offline mode · Managed installation and configuration · SSO
Read 2 Oct 2026 · telerik.com
On the record
- Compliance
- The enterprise page describes a third party SOC 2 Type II assessment, GDPR compliance, HIPAA readiness, and an ISMS aligned with ISO/IEC 27001 certification standards.telerik.com · read 2 Oct 2026
- Enterprise controls
- Enterprise features include policy driven installation, managed app configuration, SSO, and offline mode for restricted environments.telerik.com · read 2 Oct 2026
- Integrations
- Its MCP server connects to coding assistants and agent powered IDEs, with documented setup for VS Code, Cursor, Claude Code, GitHub Copilot CLI, and Codex CLI.telerik.com · read 2 Oct 2026
- License
- Each subscription license allows one user, and the subscription automatically renews monthly or yearly according to the selected plan.telerik.com · read 2 Oct 2026
- MCP security
- Fiddler MCP output sanitization can sanitize sensitive information before data is shared with a model.telerik.com · read 2 Oct 2026
- Platform limits
- Downloads are offered for Windows 10 and 11, macOS 11+ on Intel or Apple Silicon, and Linux Ubuntu 20+; the page advertises a free 10 day trial.telerik.com · read 2 Oct 2026
- Protocols
- The product decodes HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, and Protobuf.telerik.com · read 2 Oct 2026
- Purpose
- Fiddler Everywhere captures, inspects, modifies, and replays HTTP/S traffic across applications, services, and devices.telerik.com · read 2 Oct 2026
- Support
- Pricing lists Basic support with 72 hour response, Lite support with 72 hour response, and Enterprise Priority support with 24 hour response.telerik.com · read 2 Oct 2026
- Supported users
- The product page identifies developers, QA staff, and support engineers as intended users.telerik.com · read 2 Oct 2026
- Traffic capture
- Capture modes include system proxy, network, browser, and terminal capturing.telerik.com · read 2 Oct 2026
- Traffic tools
- Users can compose API requests, replay traffic, set breakpoints, and create rules to modify requests and responses.telerik.com · read 2 Oct 2026
