Best diagnosing software for free download

Colasoft Capsa is an easy-to-use network analyzer (aka. protocol analyzer & packet sniffer) that performs real-time packet capturing, 24/7 network monitoring, advanced protocol analyzing, in-depth packet decoding, and automatic expert diagnosing.
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CheckWWW is set of network tools useful for diagnosing network and hosts from your Palm. It includes tools like: WHOIS * PING * TRACEROUTE * LOOKUP * FINGER * TIME sync
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Essential NetTools is a useful tool for diagnosing networks and monitoring your computer's network connections. It's a Swiss Army knife for everyone interested in a set of powerful network tools for everyday use.
Related software: network, monitoring, netstat, ping, traceroute, portscan, …

PingCOPA, is an aid to network engineers when monitoring and diagnosing network problems. PingCOPA installs on all 32 bit Microsoft Windows operating systems (except 95)
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NetStat Agent is a powerful and extremely useful network tool for monitoring and diagnosing. It includes all useful network tools such as netstat, ping, traceroute, ipconfig, dns query (nslookup), whois, arp, route and http checker, but in a clean graphical interface.NetStat Agent shows your TCP and UDP connections, the geographical location of the remote IP-address and its hostname and more. It gives you the option to close unwanted connections. The program provides you with the ability to test whether a remote host is reachable across an IP network and determines the route between your computer and a remote host. It retrieves all available information about your computer network configuration. It also monitors entries in the Address Resolution Protocol (ARP) cache and displays the IP routing table. NetStat Agent provides you with the ability to monitor web sites to test whether a URL is reachable.Main features:- You can configure special rules to close unwanted connections, terminate processes, play the sound alert, etc.- Each new or old connection is highlighted.- You can add, delete and modify ARP entries in the ARP cache.- Provides the ability to renew or release DHCP adapter configuration and to disable adapters.- Built-in Whois utility allows you to query all information about an IP address or domain.- The powerful log manager allows you to view, delete and clear netstat or arp log files.- Graphs the round trip time and shows the country of the hop for ping and traceroute utilities.Still not convinced? Just download it and try it for yourself!
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PingCOPA, is an aid to network engineers when monitoring and diagnosing network problems. PingCOPA installs on all 32 bit Microsoft Windows operating systems (except 95). Speech is only available on systems with the Microsoft Text-to-speech engine installed.PingCOPA allows simultaneous multiple ping and trace route sessions. Multiple windows can be opened so many subnet and IP address ranges can be monitored simultaneously.Ping sessions can be saved so you can recall address ranges and search options easily. Results can easily be copied to the clipboard and pasted into a spreadsheet. All addresses are automatically resolved to a URL where possible, and a MAC addresses lookup feature is provided.Traceroute provides both ICMP and UDP hops. A network calculator provides a means to determine subnet masks and ranges, and various command line tools are provided to monitor your machines network configuration.Emails, speech and file logging can be generated at regular intervals using the snapshot facility, or when a connection state changes using the powerful alarm facility. You can associate a snapshot or alarm with any IP address and both will automatically monitor the address when it is Pinged.Ping Support PingCOPA supports ICMP ping. Simultaneous ping requests can be made on individual IP addresses and/or different ranges of IP addresses.TraceroutePingCOPA can simultaneously display traceroutes to multiple destinations. Both ICMP and UDP requests are made during traceroute and the response to both at each node is displayed.MAC AddressesPingCOPA can obtain the MAC address of IP devices on a local subnet.SpeechSpeech output is provided on machines supporting the Microsoft speech interface. This enables engineers to work on network cables and routers when monitoring an IP address without having to look at the screen.AlarmsAlarms can be setup to monitor specific IP addresses. These alarms can be activated when...
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