Research into Quake Matrix mod for Marco Cawthorne for his archive:
Below is a list of known releases of the Quake Matrix modification and locations where the files were known to be located (if available).
Use the internet archive wayback machine to check the links.
Matrix01.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix01.zip
Matrix02.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix02.zip
http://www.planetquake.com/qmatrix/matrix02.zip
Matrix03.zip
http://dl.fileplanet.com/dl/dl.asp?qmatrix/Matrix03.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix03.zip
Matrix04.zip
http://dl.fileplanet.com/dl/dl.asp?qmatrix/Matrix04.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix04.zip
http://www.planetquake.com/qmatrix/matrix04.zip
Matrix05C_SRC.zip
http://quake-1.com/quakec-gallery/Matrix05C_SRC.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix05C_SRC.zip
http://www.quake-1.com/quakec-gallery/Matrix05C_SRC.zip
Matrix05C_UPD.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix05C_UPD.zip
Matrix05Source.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix05Source.zip
matrix05.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix05.zip
matrix05C_FULL.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/Matrix05C_FULL.zip
q1-matrix05.zip
ftp://ftp.edome.net/online/clientit/q1-matrix05.zip
qmatrix_src.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/qmatrix_src.zip
http://www.planetquake.com/qmatrix/qmatrix_src.zip
qmrun.zip
http://www.fileplanet.com/dl/dl.asp?/planetquake/qmatrix/qmrun.zip
http://www.planetquake.com/qmatrix/qmrun.zip