There are a number of SDRSharp plugins that extend its functionality. Here is a collection of all the plugins and download links that I could find. The installation of most of these plugins will require editing the Plugins.xml file with a text editor such as notepad. More detailed instructions are usually bundled in a readme file with the plugin.
Note: SDR# has recently changed its plugin install procedure. Many plugin install instructions will refer to adding a line to the SDRSharp.config.exe file. Instead the line should now be added to the Plugins.xml file.
Note 2: Plugins that were once in the SDR# Yahoo group are gone as all the files were purged by the SDR# developer some months ago. We have been unable to find alternative download links for these files.
Unitrunker Trunking Plugin
Allows the trunking control software Unitrunker to control the frequencies in SDRSharp. This allows digital and analogue trunking systems to be followed.
Allows the Orbitron satellite tracking software to control the frequency in SDRSharp. This is useful as Orbitron can automatically correct for the Doppler shift when listening to satellites.
Frequency Manager + Scanner and Scanner Metrics and Frequency Entry Package Plugin
This is a plugin package which comes with three plugins. It comes with a more advanced frequency manager than the one shipped with SDRSharp.
It also has a scanner option which can quickly scan through a group of your saved frequencies, looking for an active signal.
It also has a scanner metrics plugin, which records frequency activity to a database. Later this database can be analyzed to find out which frequencies are the most active, saving you time searching manually for active frequencies.
Finally, this package also has a frequency entry plugin, which works like the old SDRSharp frequency entry used to work. Basically, it just allows you to choose a center frequency and IF frequency easily by typing it in instead of adjusting it with the mouse.
Fast Scanner Plugin
Similar to the AutoTuner plugin in that it automatically tunes to signals above a certain power.
Download Link (Auto Google Translated to English from Russian)
Allows programs like WXTrack to work with SDRSharp through a DDE interface.
Audio FFT Plugin
Adds a audio FFT display in the plugin window.
Adds a simple audio scope to the plugin window.
Simple Audio EQ Balance Plugin
Adds a simple audio EQ balance setting option box in the plugin window.
Level Meter Plugin
Adds a power meter for the currently tuned frequency and bandwidth.
CTCSS Detector and Squelch Plugin
Adds a Continuous Tone-Coded Squelch System (CTCSS) decoder.
DCS Detector and Squelch Plugin
Adds a Digital Coded Squelch (DCS) decoder. Similar to the CTCSS detector.
Allows signal reception to be timeshifted to allow for time to click on a signal.
Modified Recording Plugin
An enhanced version of the recording plugin that comes standard with all SDR# installations. Adds a feature to record only when there is a signal, select between mono/stereo, select samplerate, and choose file output location.
Digital Audio Processor
Adds digital audio processing features such as an improved squelcher, an audio inverter and a bandpass and deemphasis filter.
DSD+ GUI Interface Plugin
Adds a GUI interface for the popular DSD+ digital speech decoder program.
IQ Plugin Autocorrection
Replacement for the standard IQ autocorrection. Helps improve performance on slow computers.
Adds an audio spectrum waterfall to SDR#.
E4000 Gain Mod Enabler
A plugin which allows the E4000 Linrad gain profiles to be used in SDRSharp, via use of a modified rtl_tcp server.
Easy Scanner Plugin (Missing)
Another scanner plugin similar to the scanner already shown above. Add frequencies to the database, then use the scanner to automatically find an active signal.
Download from the files section of this Yahoo group. (You will need to register first)
New download link and users guide here.
AutoTuner Plugin (Out of date)
Automatically tunes to signals that appear in the spectrum which are above a certain adjustable signal strength. Can also create null areas to prevent automatically tuning to unwanted signals. There seems to be only an outdated version, which is built in to an old version of SDRSharp available.
ADSB# Plugin (Missing)
Runs the ADSB# ADS-B decoding program as a plugin in SDRSharp. The main advantage to using this plugin is that you get to visually see the waterfall whilst decoding. It also adds a 1-bit CRC error check.
Download from the files section of this Yahoo group. (You will need to register first) (Note: File is gone now, still looking for updates to this plugin)
NOTE: This plugin appears to be dead. If you are just looking for the ADSB# software (not the plugin), it comes in the standard SDR# software download from sdrsharp.com.
Modified ScopeView Plugin (Missing)
A modified version of the scope view plugin with Decimation, HoldOff and Hold options resides in the SDRSharp Yahoo group files section under the name TXmonitorScopeView.zip (you will need to join the group first to download).