An open source Low Density Parity Check decode from Phase 4 Ground is working for DVB-S2, DVB-S2X, and DVB-T2 in GNU Radio, thanks to the efforts of Ahmet Inan, Ron Economos, and Charles Brain.
This is a big step forward for open source satellite communications.
Video report here:
https://youtu.be/fOYVOgybFKY
Out of Tree (OOT) GNU Radio module by Dr. MPEG here:
https://github.com/drmpeg/gr-dvbldpc
Decoder by Ahmet here:
https://github.com/xdsopl/LDPC