Free scope software for windows

Scope displays a small oscilloscope applet, showing the waveform of the current audio source.
Scope will sample the audio source(s) selected in the Windows mixer. To change the sources, open the Mixer applet (located in the system tray, next to the clock) and select Options | Properties | Recording.
Any device indicated as Selected will be sampled by Scope. This can be CD Audio, Microphone, Line-In or any other input device your soundcard supports.
The Scope window cannot be resized, but right-clicking the applet window will bring up a menu that allows you to Hide the Scope window. When this option is selected, Scope will run in the system tray (next to the clock).
Preferences allows the setting of the sampling rate (in milliseconds). This produces a far better waveform in the applet window, but degrades performance.

Scope Calculator will calculate and compare the magnification, field of view, and exit pupil of up to 7 eyepieces when used with a specific telescope.
Also allows easy toggling between the results when used normally, with a Barlow lens, and with a SCT reducer-corrector.

Messcleaner is a small and simple program that finds and eliminates the junk files from your system..
Messcleaner acheives this goal by:
- Scanning for dead shortcuts.
- Scanning for duplicate files.
- Cleaning user defined directories on startup or at pre-defined times, with file masks to narrow the scope of files to clean.
- Finding junk files based on their attribute(s), extension(s), size, date, or any combination of these.

DhcpExplorer can be used to to discover DHCP servers on your LAN or local subnet. This is useful for locating servers that are not supposed to be on your network (rogue DHCP servers) as well as checking the expected output of known servers. DHCP Explorer broadcasts on the local physical subnet to find available DHCP servers. The tool is designed with a user-friendly interface and is easy to use.
Dynamic Host Configuration Protocol (DHCP) is a client-server networking protocol and uses the same two IANA assigned ports for BOOTP: 67/udp for the server side, and 68/udp for the client side. A DHCP server provides configuration parameters specific to the DHCP client host requesting, generally, information required by the client host to participate on an IP network.
DHCP also provides a mechanism for allocation of IP addresses to client hosts. DHCP server is a useful tool that automates the assignment of IP addresses to hundreds of workstations in your network. The server maintains a pool of IP addresses that you use to create scopes.
A DHCP scope is a collection of IP addresses and TCP/IP configuration parameters that are available for DHCP clients to lease. The server automatically allocates these IP addresses and related TCP/IP configuration settings to DHCP-enabled clients in the network. The DHCP service leases the IP addresses to clients for a period that you specify when you create a scope. A lease becomes inactive when it expires.
Through the DHCP server, you can reserve specific IP addresses permanently for hardware devices that must have a static IP address (e.g., a DNS server). An advantage of using DHCP is that the service assigns addresses dynamically.
The service returns addresses that are no longer in use to the IP address pool so that the server can reallocate them to other machines in the network. If not for this service, you would have to manually configure IP for new computers, keep track of IP addresses so that you could reassign addresses that clients arent using, and reconfigure computers that you move from one subnet to another.