I already tried to install those, they’re too old to even install. Thanks for the reply anyway.

Try Evernote maybe?

Yes, but the idea is that because the code is open source anyone can look at it and determine on their own whether it is in fact safe or not. Generally speaking the open source community is very good at figuring this kind of stuff out but I would say your fear is not necessarily out of place since nothing is 100% guaranteed. That said though, the more popular FOSS apps are quite safe.

Very cool, seems very promising.