Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Fiddler allows you to inspect all HTTP(S) traffic, set breakpoints, and "fiddle" with incoming or outgoing data.
Top 3 alternatives
Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).
Charles Features
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21 Request Metrics alternatives- Paid • Proprietary
- Website Audit Tool
- Online
- Software as a Service (SaaS)
Get realtime website performance tests generated from real user experience on your website. Request Metrics gathers performance data from your actual users, rather than a synthetic test, so you know whether your site is really fast.
Request Metrics Features
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HTTP Debugger Pro - A Professional HTTP Sniffer and Analyzer for Developers.
HTTP Debugger Features
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PCAPdroid is an android app to capture the phone traffic and analyze it remotely (e.g. via Wireshark). The traffic can be easily downloaded from a remote device thanks to the integrated HTTP server, or streamed to a remote UDP receiver.
PCAPdroid Features
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NodePing Server Monitoring and Web Site Monitoring. Simple but powerful Internet service monitoring. Checks as frequent as once a minute.
Nodeping Features
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Working quietly on the Menubar, Surge is a high-performance HTTP/SOCKS5 proxy server. It is capable of intercepting and logging the summary of HTTP traffic, and meanwhile transmitting the traffic to other proxy servers according to the flexible rule system.
Surge for Mac Features
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- Free • Proprietary
- Web Debugger
- HTTP(S) Debugger
23 HttpFox alternatives- Mac
- Windows
- Linux
- Waterfox
- Pale Moon
HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.
HttpFox Features
DiscontinuedThe project is no longer developed. Last version, 0.8.14.1, released in May 2014, is not compatible with Firefox, but the extension still works on XUL-based Firefox forks like
Waterfox and 
Pale Moon
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Packetriot makes it simple to expose services and data on local and private networks to the Internet. You can serve static websites, dynamic web applications, test single-sign-on work-flows or build webhooks.
Packetriot Features
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NetStat Agent is a powerful and easy-to-use network toolkit for monitoring and diagnosing. It includes all useful network tools like netstat, ping, traceroute, ipconfig, dns query (nslookup), whois, arp, route and http checker.
NetStat Agent Features
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updown.io is a HTTP monitoring solution with a clean UI and a cheap and simple pricing. It notifies you of downtimes by email or SMS and provides a public status page you can share.
updown.io Features
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HTTP Analyzer is such a handy tool that allows you to monitor, trace, debug and analyze HTTP/HTTPS traffic in real-time. It is used by industry-leading companies including Microsoft, Cisco, AOL and Google.
HTTP Analyzer Features
Top 3 alternatives
- Free • Proprietary
- Web Debugger
- HTTP(S) Debugger
- HTTP Client
17 Live HTTP Headers (Chrome) alternatives- Mac
- Windows
- Linux
- Google Chrome
Live HTTP Headers logs all HTTP traffic between Google Chrome and the Internet.
Live HTTP Headers (Chrome) Features
WarningSuspected of distribute adwares, even after removing the extension
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Log all traffic on your network card. Analyze and parse network packets. Capture transmitted files and passwords.
York Features
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Driftnet is a program which listens to network traffic and picks out images from TCP streams it observes.
Driftnet Features
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