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About

Skim through traffic with highlighting by content type, status & source, or use powerful filtering tools to precisely match the messages that matter to you. Examine the URL, status, headers & body of each request or response, with inline explanations & docs from MDN. Dig into message bodies with highlighting & auto formatting for JSON, HTML, JS, hex and others, all using the power of Monaco, the editor from Visual Studio Code. Precisely match requests, jump to them when they appear, and edit anything: the target URL, method, headers or body. Manually respond directly to requests as they arrive, or pass them upstream, and pause & edit the real response on the way back. Step through HTTP traffic request by request, or manually mock endpoints and errors. Create rules to match requests and respond with your own content, to quickly prototype against new endpoints or services.

About

Tonzio is a Windows-first IT operations platform combining endpoint visibility, network monitoring, Helpdesk, centralized Outlook email signatures, website blocking, reporting, and automation. It inventories Windows devices, applications, hardware, updates, monitors, and active-user context while collecting scheduled and on-demand diagnostics. Endpoint measurements track gateway and internet latency, packet loss, jitter, speed, uptime, and traffic patterns; network sentinels extend coverage to important sites and infrastructure. Helpdesk supports email-driven tickets, queues, SLAs, requester workflows, attachments, and linked-device context. Teams can apply website rules and manage Outlook signatures, then connect events, notifications, assets, dashboards, scheduled reports, exports, webhooks, and the scoped Client API. Security and configuration visibility includes antivirus, firewall, BitLocker, UAC, screen lock, MFA, login protection, session revocation, and audit history.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers looking for a solution for debugging, testing and building with HTTP

Audience

Internal IT teams, managed service providers, service desks, and Windows-heavy organizations that need endpoint, network, support, and workplace-policy visibility.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Core features (interception, debugging, manual rewriting for all traffic) are all free.

Advanced features (automated rewriting, import/export, advanced configuration options) require a Pro subscription.
Free Version Supported
Free Trial Not Supported

Pricing

$29
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 4.0 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • HTTP Toolkit makes it easy to intercept traffic even in complicated cases, like Docker, Android and command-line/backend software. The UI looks good (much nicer than older alternatives like Fiddler, Burp and Charles) and the UX is clear. I really like that it's all open source so you can see how it works.

Cons

  • Not quite as feature filled as older tools like Fiddler/Burp/Charles, but rapidly improving and it's possible to contribute to help move things forwards.

Pros & Cons from Real Users

Pros

  • Device telemetry is easily available, with historic stats as well. Helps to support issues with devices, see where the risks are. Also helps to keep track of warranties, contracts, and automated asset inventory. Haven't tried website blocking yet.

Cons

  • Adding barcode scanning for asset management would be nice

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

HTTP Toolkit
Founded: 2018
Spain
httptoolkit.com

Company Information

Tonzio
Founded: 2025
Newark, Delaware, United States
www.tonzio.com

Alternatives

Alternatives

Fiddler

Fiddler

Progress Software

Categories

Debugging Supported
Network Monitoring Supported
Software Testing Supported

Categories

Integrations

Android Supported
Brave Browser Supported
Docker Supported
Electron Supported
Google Chrome Supported
Microsoft Edge Supported
Mozilla Firefox Supported
Semarchy xDI Supported

Integrations

Android Not Supported
Brave Browser Not Supported
Docker Not Supported
Electron Not Supported
Google Chrome Not Supported
Microsoft Edge Not Supported
Mozilla Firefox Not Supported
Semarchy xDI Not Supported
Claim HTTP Toolkit and update features and information
Claim HTTP Toolkit and update features and information
Claim Tonzio and update features and information
Claim Tonzio and update features and information