Fiddler Everywhere vs NetworkSpy
Fiddler Everywhere
telerik.com
NetworkSpy
networkspy.appSide by side
| Figure | Fiddler Everywhere | NetworkSpy |
|---|---|---|
| Price from | $3.08/mo | $1.50/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 10 | 7 |
| Spec score · Web Debugging Proxies | 8.5 (#9) | 9.1 (#3) |
| 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. | The site lists a native Model Context Protocol bridge for connecting traffic to AI agents and SSO/SAML integration on the Business plan. |
| Protocols | The product decodes HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, and Protobuf. | The pricing FAQ says NetworkSpy supports gRPC, including Protobuf decoding, and WebSockets with real-time message streaming. |
| Purpose | Fiddler Everywhere captures, inspects, modifies, and replays HTTP/S traffic across applications, services, and devices. | NetworkSpy is an application-level HTTP/HTTPS debugging tool for capturing and analyzing network traffic. |
| Support | Pricing lists Basic support with 72 hour response, Lite support with 72 hour response, and Enterprise Priority support with 24 hour response. | The Professional plan includes priority email support, while Business includes priority 24/7 support. |
Plans
Fiddler Everywhere
- Lite$7 a month
- LitePriced on request
- Pro$13 a month
- ProPriced on request
- Enterprise$37 a month
- Lite$10 a month
- Pro$19 a month
- Enterprise$37 a year
- Lite$84 a year
- Pro$156 a year
NetworkSpy
- FreeFree
- Personal$18 a year
- Professional$29 a year
- Team Starter$49 a month
- Lifetime$99, paid once
- Business$149 a month
- EnterprisePriced on request
In their own words
Fiddler Everywhere
Fiddler Everywhere captures, inspects, modifies, and replays HTTP/S traffic across applications, services, and devices. Capture options include system proxy, network, browser, and terminal modes. It decodes HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, and Protobuf. Users can compose API requests, replay traffic, set breakpoints, and create rules that change requests or responses. Its MCP server connects to coding assistants and agent-powered IDEs, with setup documented 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 aimed at 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; Android and iOS are also listed as platforms. A 10-day trial is available, but there is no free plan. Lite costs $10 a month and Pro $19 a month, both billed monthly; Enterprise costs $37 a year, billed annually.
NetworkSpy
NetworkSpy is an application-level HTTP/HTTPS debugging tool for capturing and analyzing network traffic. It can intercept HTTPS, inspect request metadata, compare requests side by side, and let users edit and replay captured traffic. Breakpoints can pause or change live requests, and response mocking is supported. It also handles WebSocket message streaming and gRPC with Protobuf decoding. Its LLM analyzer visualizes streaming tokens, tracks token usage, and reports latency for each chunk; custom viewers can display proprietary binary formats or other structured data. NetworkSpy runs on macOS, Linux, and Windows, and physical iOS and Android devices can be configured to route traffic through it for inspection. The privacy policy says inspected traffic stays on the user's machine and is not collected or monitored. The free plan has limits on LLM token analysis and other features. Personal costs $18 a year, Professional $29 a year, Team Starter $49 a month, and Business $149 a month. An individual license is limited to one device.