Wireshark

Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network.

Free Open Source Mac OS X Windows Linux BSD

Wget

GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most widely-used Internet protocols.

Free Open Source Mac OS X Windows Linux BSD

Fiddler

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.

Free Windows

tcpdump

tcpdump is a common packet analyzer that runs under the command line. It allows the user to intercept and display TCP/IP and other packets being transmitted or received over a network to which the computer is attached.

Free Open Source Mac OS X Windows Linux BSD

WebCopy

Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing. WebCopy will scan the specified website and download it's content onto your hardisk.

Free Windows

Offline Explorer

MetaProducts Offline Explorer is a Windows NT/2000/XP/2003/Vista program that allows you to download an unlimited number of your favorite Web and FTP sites for later offline viewing, editing or browsing.

Commercial Windows

SiteSucker

SiteSucker is a Macintosh application that automatically downloads Web sites from the Internet. It does this by asynchronously copying the sites Web pages, images, backgrounds, movies, and other files to your local hard drive.

Commercial Mac OS X iPhone

apptalk.ninja

App and device communication diagnostics tool for better bug tracking & QA. An easy-to-use tool that monitors http, BLE and iBeacon communication over-the-air helping app developers with bug tracking and building more reliable apps.

Freemium iPhone iPad

grab-site

grab-site is a crawler for archiving websites to WARC files. It includes a dashboard for monitoring multiple crawls, and supports changing URL ignore patterns during...

Free Open Source Mac OS X Linux

WebZip

WebZIP Offline Browser - a fast and easy way to download, store and browse Web sites offline.

Commercial Windows

wpull

Wpull is a wget-compatible web downloader and crawler with WARC and Python/Lua scripting support

Free Open Source Mac OS X Linux

SiteCrawler

SiteCrawler is a website downloading application that lets you capture entire sites or selected portions, like image galleries. It features powerful settings that no...

Commercial

Wysigot

Wysigot is far more than just a simple off-line browser! It captures the entire contents of your sites, with their scripts, flashes, cookies etc., but offers numerous other functions as well.

Freemium Windows

WebCopier

WebCopier is an easy-to-use website mirror utility. It allows to download entire Web sites, store them locally and view them later, at users' convenience.

Commercial Mac OS X Windows

Website Downloader

Website Downloader lets you download an entire website, assets and all. FEATURES - No download required, works through the browser - Accurate and complete...

Commercial Web

WinWSD

It downloads websites for offline browsing. * Downloading files from FTP and HTTP servers * Finding and changing links in HTML, CSS, JS and SWF files *...

Free Windows

Website Ripper Copier

Website Ripper Copier (WRC) is an all-purpose, high-speed website downloader software to save website data. WRC can download website files to your hard drive for...

Commercial Windows

AirSnare

AirSnare is another tool to add to your Wireless Intrusion Detection Toolbox. AirSnare will alert you to unfriendly MAC addresses on your network and will also alert...

Free Windows