1.
WiFi SiStr - v1.0.2678.17860  
A small tool to keep your Wi-Fi signal strength always visible.

202670
 2.
Simple Net Speed 1.5  
Accelerate your broadband connection.

77993
 3.
Fiddler 4.4.7.1  
An HTTP Debugging Proxy which logs all HTTP traffic between your computer and the Internet.

63413
 4.
Networx 5.3  
Free Bandwidth Monitoring and Usage Reporting program.

53868
 5.
NetTraffic 1.27.1  
NetTraffic is a network data rate monitoring tool.

51660
 6.
SoftPerfect Network Scanner 5.5.9  
A free multithreaded IP, SNMP, NetBIOS scanner. Can detect hidden shares on a LAN.

51312
 7.
Virtual WiFi Router 2.0.1.5  
Convert your PC into a WiFi hot spot for free.

48860
 8.
SpeedGuide TCP Optimizer 3.0.8  
Optimize Dialup, DSL and Cable all from one simple to use interface.

48516
 9.
Wireless Network Watcher 1.70  
Displays a list of all computers and devices connected to your wireless network.

43438
 10.
Canadian Bandwidth Meter 3.0  
Bandwidth monitor for logging real time and cumulative bandwidth totals.

42866
 11.
NETEagle 5.50  
A tool that can optimize your internet connection up to 200 percent or higher.

42786
 12.
IPNetInfo 1.53  
Easily find all available information about an IP address.

41484
 13.
UltraVNC 1.1.9.6  
Control a PC remotely as if you were sitting in front of it.

40149
 14.
Fast IP Changer 1.8 Beta R4  
Fast IP Changer is a small program to quickly change and view your IP address.

39502
 15.
Wireshark 1.11.3 Development / 1.10.7  
Network protocol analyzer used for troubleshooting, development, analysis.

39401
 16.
KiTTY 0.63.0.7  
A free implementation of Telnet and SSH based on PuTTY.

36811
 17.
NetSetMan 3.7.1  
A network settings manager which can easily switch between 6 different, visually structured profiles.

31396
 18.
Canadian Ping Monitor 2.0  
Ping Monitor pings a max of 30 hosts.

29164
 19.
Networx Portable 5.3  
Free Bandwidth Monitoring and Usage Reporting program.

27844
 20.
NetMeter EVO 2.0.0  
A customizable network bandwidth monitoring program for Windows.

27270
 21.
OpenVPN GUI 2.3.3  
Run OpenVPN without the console window using this front-end GUI.

24138
 22.
IP Tools (formerly IP Sniffer) 1.99.3  
A suite of IP Tools built around a packet sniffer.

23739
 23.
CurrPorts 2.10  
Displays a list of all currently opened TCP/UDP ports on your computer.

23714
 24.
Wake On LAN Ex 2.12  
Remotely turn network computers on.

23696
 25.
Connection Keeper 13.1  
Prevents your internet connection from being dropped due to inactivity.

22190
 26.
Bitmeter II v3.5.10  
A bandwidth meter that allows you to visually monitor your internet connection.

21466
 27.
PortScan 1.43  
Shows all open ports and additional information about HTTP, FTP, SMTP, SNMP and SMB services.

20984
 28.
IPaddress 3.0.1  
IPaddress finds your IP and lets you view/copy/email it.

19551
 29.
Win7 MAC Address Changer 2.0  
Change the MAC Address used by network interface cards.

18250
 30.
DNS Jumper 1.0.5  
Provides a one-click system to change DNS servers.

17817
 31.
WinPing 1.6.4104  
Ping program. Useful to test your connection.

16978
 32.
Advanced IP Scanner 2.3  
A free, fast and easy-to-use network scanner.

15797
 33.
EasyMTU v3.0  
Utility that optimizes your TCP/IP settings for your dial-up adapter.

15439
 34.
PingInfoView 1.41  
Easily ping multiple host names and IP addresses.

15012
 35.
SmartSniff 2.08  
Capture TCP/IP packets and view the captured data as a sequence of conversations.

14972
 36.
IP Changer 3.0.15  
Change the computer´s IP Address, SubNet Mask, DNS Server, more.

14612
 37.
Spiceworks IT Management Desktop 7.1  
A free, browser-based tool that manages up to 1,000 network devices.

13177
 38.
WeFi 4.0.1.0  
Locate the best Wi-Fi hotspots anywhere around the world.

13164
 39.
MACAddressView 1.29  
Find the company details (company name, address, and country) according to the MAC address of a product.

12697
 40.
DNSDataView 1.41  
Easily retrieve the DNS records (MX, NS, A, SOA) of specified domains.

12468
 41.
HTTPNetworkSniffer 1.36  
Captures all HTTP requests/responses sent between the Web browser and the Web server.

12404
 42.
IP Changer 0.2  
Change the IP Address, SubNet Mask, Gateway, DNS Server, DHCP Status of your LAN Interface.

12062
 43.
Tunnelier 4.39  
Free SSH client - SFTP, tunneling, terminal.

11930
 44.
Sysinternals TCPView 3.05  
Shows you detailed listings of all TCP and UDP endpoints on your system.

11892
 45.
WhoisThisDomain 2.09  
This utility allows you to easily get information about a registered domain.

11457
 46.
WinHotspot 1.2.042  
Turn your Windows laptop into a virtual wireless hotspot and range extender.

11368
 47.
Axence NetTools 5.0.1.15303  
Measure network performance and diagnose network problems.

11272
 48.
PRTG Network Monitor 14.2.9.1689  
A network monitor featuring advanced data acquisition and detailed reporting.

11001
 49.
IP Changer 3.0.15  
Manages your IP setting configuration regarding multiple network adapters.

10839
 50.
NetworkTrafficView 1.82  
A network monitoring tool that displays general statistics about your network traffic.

10773
 51.
AirSnare 1.5  
A free, useful and reliable intrusion detection system to help you monitor your wireless network.

10661
 52.
Wake-On-LAN v1.0  
Switch on a computer over network.

10185
 53.
IPConfig 6.5.4  
Displays all your network information, local and remote.

9679
 54.
DNS Benchmark 1.2.3925.0  
Determine the exact performance of local and remote DNS nameservers .

9639
 55.
WinPcap 4.1.3  
Industry-standard tool for link-layer network access in Windows environments.

9592
 56.
DynDNS Updater 4.1.6  
Update the IP address database in DynDNS server into current IP address.

9553
 57.
LanTopolog 1.32  
Provides physical network topology discovery, visualization and monitoring.

9445
 58.
PuTTY 0.63 Beta  
A free implementation of Telnet and SSH for Win32 and Unix platforms, along with an xterm terminal emulator.

9422
 59.
HOSTS Manager 1.0.0  
An easy to use application to modify the hosts file.

9222
 60.
IP Monitor 7.5  
Ping multiple hosts.

8873
 61.
SysInternals PsExec 2.1  
A light-weight telnet-replacement that lets you execute processes on other systems.

8317
 62.
WifiInfoView 1.50  
Scans the wireless networks in your area and displays extensive information about them.

7970
 63.
Ping Plotter Freeware 1.30  
Ping/Trace Route App. Fast and Graphical.

7905
 64.
NET Traffic Meter 2.1.2578  
Monitors and displays real time traffic information about your network, wireless network or modem setup.

7855
 65.
ST Proxy Switcher 3.0.53  
Stay anonymous when you browse the Internet.

7454
 66.
LanCalculator 1.0.2  
Easily calculate subnet addresses and masks.

7444
 67.
NetPing v2.01  
Monitor your ADSL internet connection.

7205
 68.
Virtual Router 1.0  
Turns your computer into a Wifi Hot Spot using Windows Wireless Hosted Network (Virtual Wifi) technology.

7187
 69.
Simple IP Config 2.3  
A program for Windows to easily change various network settings.

7143
 70.
Free IP Tools 4.2  
A collection of smart network tools.

7050
 71.
Keep Alive 1.0  
Emulates internet activity, keeping any internet connection alive.

7035
 72.
WIFi Locator 1.1  
Monitors the activity of wireless networks around you.

6922
 73.
EasyTerm v4.3  
Advanced sockets-enabled Telnet terminal program.

6668
 74.
ShellTelnet v1.12  
Windows telnet client specialized for use with a Unix shell account.

6663
 75.
WebCookiesSniffer 1.17  
A packet sniffer tool that captures and displays all Web site cookies downloaded by your Web browser.

6660
 76.
ShowIP 2.1.0.95  
Shows your IP address, notifies you when the address has changed, more.

6622
 77.
IPc 1.4.5  
IPc (IP checker) is just a simple tool to view your IP Address.

6543
 78.
IM Sniffer 1.0.344  
Sniffs all incoming and outgoing instant message traffic and records file transfers.

6488
 79.
SoftPerfect WiFi Guard Portable 1.0.4  
Monitors your WiFi network and detects unauthorized connections.

6472
 80.
PuTTY Portable 0.63 Beta  
PuTTY Portable is the popular PuTTY telnet and SSH client packaged as a portable application.

6449
 81.
IP Locator 1.0  
Find all available information about an IP address.

6405
 82.
Ultima Port Scanner  
Quickly scans local and remote ports.

6341
 83.
Network Notepad 4.6.9  
A utility for drawing interactive network diagrams.

6234
 84.
InSSIDer 3.1.2.1  
A handy and easy-to-use Wi-Fi network scanner.

6104
 85.
Rizone Winsock Repair 0.5.5.550  
Reset / repair the Winsock configuration to defaults or clean state.

6084
 86.
Net Scan 1.0  
A simple tool for scanning public or private networks.

5986
 87.
Microsoft Network Diagnostic Tool (KB914440)  
Analyzes information about your network connectivity to help you troubleshoot network-related problems.

5978
 88.
3d Traceroute 2.4.40.7  
A full blown three dimensional traceroute program.

5931
 89.
BySoft StayAlive Pro 3.0  
Simulates Internet activity so you don´t get disconnected from your ISP.

5889
 90.
TightVNC 2.7.10  
Software package allowing remote network access to graphical desktops.

5858
 91.
ShaPlus Bandwidth Meter 1.4  
Displays the current, daily and monthly bandwidth usage for selected network adapters.

5778
 92.
MagiWOL 3.30  
Wake on LAN (WOL) program.

5764
 93.
TICK v1.10  
Logs all calls including cost of call / data transferred and much more.

5754
 94.
EasyPing! 1.0  
An easy to use Network tool to ping multiple hosts.

5658
 95.
Free Whois Anywhere v1.0  
Free whois anywhere. Search all gTLD, most ccTLD domains and IP information.

5546
 96.
IQonn Lite - Connection Manager 3.02  
IQonn Lite is a very advanced Operator independent Connection Manager.

5513
 97.
NetStumbler 0.4.0  
Detect Wireless Local Area Networks (WLANs) using 802.11b, 802.11a and 802.11g.

5512
 98.
Raccoonworks SpeedTest 2.0  
Measures Network/Internet Speed.

5497
 99.
PingTrace 2.71  
Windows ping and traceroute software.

5458
 100.
My IP Address 1.2  
Software that shows your internet IP address.

5454
source: http://www.freewarefiles.com/top100/top100_network.php