Update README.md

Added a few items

README.md

@@ -6,7 +6,20 @@
 
 ## Software
 
-### POCSAC
+### Networking
++ [HBLink3](https://github.com/n0mjs710/hblink3) Open Source HomeBrew Repeater Proctol Client/Master, can be used to create links between hotspots and repeaters.
+
+### Replacement Radio Firmwares and Reverse Engineering
+
++ [MD380Tools](https://github.com/travisgoodspeed/md380tools) and [TyMD380Tools](https://github.com/KG5RKI/TyMD380Tools) have reverse engineered the MD380 and MD-2017/MDUV380 series radios respectively and have tools to build and work with replacement firmwares. MD380tools has most of what you need to understand the TYT .rdt codeplug format.
++ [OpenGD77](https://github.com/rogerclarkmelbourne/OpenGD77)  Firmware for DMR transceivers using the NXP MK22 MCU, AT1846S RF chip and HR-C6000 DMR chipset. Including the Radioddiy GD-77, Baofeng DM-1801 and Baofeng RD-5R. 
++ [G90Tools](https://github.com/OpenHamradioFirmware/G90Tools)  Tools and guides for working with the Xiegu G90 HF radio firmware 
+
+### Decoding
+
++ [multimon-ng](https://github.com/EliasOenal/multimon-ng) decodes many paging, AFSK modes, and similar, including POCSAG, FLEX, EAS.
+
+### POCSAG
 
 + [UniPager](https://github.com/rwth-afu/UniPager) Universal POCSAG transmitter controller written in Rust.
 
@@ -21,6 +34,9 @@
 + [insprectrum](https://github.com/miek/inspectrum) is a tool for analysing captured signals, primarily from software-defined radio receivers.
 + [ShinySDR](https://github.com/kpreid/shinysdr) is the software component of a software-defined radio receiver like the HackRF or RTL-SDR.
 + [SDRangel](https://github.com/f4exb/sdrangel) SDR and signal analyzer frontend to various hardware.
++ [PyMultimonAPRS](https://github.com/asdil12/pymultimonaprs) can take an RTLSDR or audio input and Igate APRS traffic.
++ [OpenWebRX](https://github.com/jketterl/openwebrx)  Open source, multi-user SDR receiver software with a web interface, forked and improved from [HA7ILM's](https://github.com/ha7ilm/openwebrx) excellent initial project.
++ [Qradiolink](https://github.com/qradiolink/qradiolink)  Multimode SDR transceiver for GNU radio 
 
 ### Logging
 
@@ -43,13 +59,15 @@
 
 + [Hamlib](https://github.com/Hamlib/Hamlib) libraries for amateur radio equipment control applications.
 + [pyhamtools](https://github.com/dh1tw/pyhamtools ) is a set of functions and classes for Amateur Radio purposes.
++ [Codec2](https://github.com/drowe67/codec2) is a FOSS ultra-low bitrate voice codec that's competitive from 3200 bits/s down to 450 bits/s. Also includes [FreeDV](https://freedv.org/), an HF digital voice mode. [PyCodec2](https://github.com/gregorias/pycodec2) is an easy Python wrapper.
++ [CSDR](https://github.com/ha7ilm/csdr) csdr is a command line tool to carry out DSP tasks for Software Defined Radio.
 
 ### Radio programming
 
 + [CHIRP](https://chirp.danplanet.com/projects/chirp/wiki/Home) a free, open-source tool for programming your amateur radio.
-+ [codeplug](https://github.com/DaleFarnsworth/codeplug/tree/master/editcp) a codeplug editor  for the Tytera MD380 and MD390 as well as the Alinco DJ-MD40 radios.
++ [editcp](https://github.com/DaleFarnsworth/codeplug/tree/master/editcp) a codeplug editor  for the Tytera MD380 and MD390 as well as the Alinco DJ-MD40 radios.
 
-### Satelite operation
+### Satellite operation
 
 + [Gpredict](http://gpredict.oz9aec.net/) a real-time satellite tracking and orbit prediction application.
 + [gr-satellites](https://github.com/daniestevez/gr-satellites) GNU Radio decoders for several Amateur satellites.
@@ -60,3 +78,8 @@
   + [MMDVM_HS_HAT](https://github.com/mathisschmieder/MMDVM_HS_Hat) for the Raspberry Pi (Zero)
 
 + [HPSDR](http://openhpsdr.org/) a hardware and software project intended as a "next generation" Software Defined Radio (SDR) for use by Radio Amateurs.
++ [SM1000 FreeDV adapter](http://www.rowetel.com/wordpress/?page_id=3902) FreeDV in hardware. Purchasable on [tindie](https://www.tindie.com/products/edwin/sm1000-freedv-adpapter/)
++ [Mobilinkd TNCs](https://github.com/mobilinkd) have open firmware, unsure if hardware is open. [Homepage](http://www.mobilinkd.com/)
++ [TR-9](https://github.com/sp5wwp/TR-9) implements an [M17](https://github.com/sp5wwp/M17_spec) (fully open source DMR/D*/P25 competitor) radio.
++ [QCX-SSB](https://github.com/threeme3/QCX-SSB)  This is a simple and experimental modification that transforms your QCX into a (class-E driven) SSB transceiver. 
++ [uBITx](https://www.hfsignals.com/index.php/ubitx/) An understandable general coverage HF SSB/CW transceiver kit