- Home
- Web Debugging Proxies
- NetworkSpy
NetworkSpy
What it is
NetworkSpy is an application-level HTTP/HTTPS debugging tool for capturing and analyzing network traffic. It can intercept HTTPS, inspect request metadata, compare requests, and let users edit and replay captured traffic. Breakpoint rules can pause or change live traffic, and response mocking is supported. It also handles WebSocket message streams and gRPC traffic, including Protobuf decoding. For AI-related traffic, its LLM analyzer displays streaming tokens, token usage, and latency by chunk. Custom viewers can present proprietary binary formats and other structured data. NetworkSpy runs on Linux, macOS, and Windows, with Apple Silicon support and Debian/Ubuntu packages. Physical iOS and Android devices can be configured to send traffic through it for inspection. The privacy policy says inspected traffic stays on the user's machine and is not collected or monitored. A free plan is available; paid plans include Personal at $18 a year, Professional at $29 a year, Team Starter at $49 a month, Lifetime at $99, paid once, and Business at $149 a month.
For and against
For
- Edits and replays captured requests.
- Breakpoint rules can pause or change live traffic.
- Supports WebSockets and gRPC with Protobuf decoding.
- Inspected traffic remains local, according to the privacy policy.
- Free plan available.
Against
- Individual licenses are limited to one device.
- Free plan has limited LLM token stream analysis.
- Business plan costs $149 a month.
- Enterprise pricing is custom and not listed.
The verdict
NetworkSpy combines traffic inspection and editing with protocol support, AI stream analysis, and custom viewers. Its free plan offers a way to start, while license limits and plan pricing are worth considering.
Who it suits
It suits developers who need to inspect, modify, replay, or mock application traffic across supported desktop systems. Its LLM analysis and custom viewers may also help those working with AI streams or structured data.
Plans and prices
Free
Core features · limited LLM token analysis · limited breakpoints · limited resource mapping
Read 15 Oct 2026 · networkspy.app
Personal
Full HTTP Debug Proxy Kit · GraphQL and JSON inspectors · LLM Token Analyzer · Custom Viewer Builder + AI
Read 15 Oct 2026 · networkspy.app
Professional
Everything in Personal · AI Viewer with custom providers · MCP · priority email support
Read 15 Oct 2026 · networkspy.app
Team Starter
Up to 5 users · centralized team billing · shared plugin presets · standard team dashboard
Read 15 Oct 2026 · networkspy.app
Lifetime
Everything in Pro · beta features · lifetime updates
Read 15 Oct 2026 · networkspy.app
Business
Up to 20 users · audit logs and activity · SSO and SAML integration · priority 24/7 support
Read 15 Oct 2026 · networkspy.app
Enterprise
Unlimited user seats · custom security reviews · on-premise deployment · dedicated account manager
Read 15 Oct 2026 · networkspy.app
On the record
- Account data
- The privacy policy says NetworkSpy collects email addresses, license keys, and anonymous device identifiers for licensing and account purposes.networkspy.app · read 4 Oct 2026
- AI analysis
- LLM-powered analysis explains payload behavior and flags possible logic errors.networkspy.app · read 15 Oct 2026
- AI traffic analysis
- Its LLM analyzer visualizes streaming tokens, tracks token usage, and shows latency for each chunk.networkspy.app · read 4 Oct 2026
- AI viewer limit
- The maker states that built-in LLM viewers target OpenAI-compatible completions endpoints and are not intended to provide full backend observability for complete agent-loop timelines.producthunt.com · read 15 Oct 2026
- Architecture
- The GitHub repository describes a cross-platform Tauri application built with Rust and React, storing analyzed traffic in a local SQLite database.github.com · read 15 Oct 2026
- Changelog update
- Version 1.2.0, dated May 1, 2026, added Protobuf, gRPC and custom binary inspection, regex global search, a 40% lower memory footprint, accessibility refinements and faster Windows/Linux startup.networkspy.app · read 15 Oct 2026
- Comparison engine
- A side-by-side comparison engine diffs request headers, bodies and response states to reveal regressions.networkspy.app · read 15 Oct 2026
- Custom viewers
- Users can build and plug in custom visualizers for proprietary binary or structured payload formats.networkspy.app · read 15 Oct 2026
- Developer setup
- The repository documents cloning the project, running bun install, launching with bun run tauri dev and building with bun run tauri build.github.com · read 15 Oct 2026
- Documentation depth
- The repository includes separate files for custom viewers, features, MCP, security, contributing and installation, indicating implementation-level documentation and extension guidance.github.com · read 15 Oct 2026
- Extensibility
- The product supports custom viewers for visualizing proprietary binary formats or other structured data.networkspy.app · read 4 Oct 2026
- Extensibility praise
- Product Hunt’s maker response says custom viewers can aggregate multiple traffic inspections and be versioned in GitHub for team sharing.producthunt.com · read 15 Oct 2026
- GraphQL support
- GraphQL inspection parses nested queries, mutations and fragments with schema-aware views.networkspy.app · read 15 Oct 2026
- HTTPS interception
- The product provides full HTTPS interception with automatic certificate management and one-click trust setup.networkspy.app · read 15 Oct 2026
- Integrations
- The site lists a native Model Context Protocol bridge for connecting traffic to AI agents and SSO/SAML integration on the Business plan.networkspy.app · read 4 Oct 2026
- Licence
- The public repository is marked Apache-2.0 licensed, while the product website footer states that the web application is released under MIT License.github.com · read 15 Oct 2026
- License limit
- The pricing FAQ says an individual license is limited to one device and team licenses are per-seat.networkspy.app · read 4 Oct 2026
- Linux limitation
- Official Linux releases provide .deb packages only; RPM or AppImage builds require cloning the repository and running the release workflow manually.github.com · read 15 Oct 2026
