matrixdotorg/synapse
on Docker Hub
sha256-343c1b4e68fa0f5bee8290cc63c420af59fb370ab76b9f585b6e85b3df9ca3ce.sig
freeplane
on SourceForge
freeplane preview/FreeplanePortable-1.12.6-pre05.paf.exe
freeplane preview/freeplane_srcpure-1.12.6-pre05.tar.gz