there is/was bitmessage
Discussion
Still tries to present itself as a finished project while being at a 0.x version number, begging for security auditors, and having had a remote code execution vulnerability in a major release in the past.
Why is every dev a glowie? Why can't any dev make an experimental prototype communication app that actually calls itself what it is, and warns users not to take it seriously until it can have a solid chance at working for most people?
Wait, why did I ask that like I don't know the answer?
So many years have been spent sabotaging our electronic infrastructure, turning it all into such bullshit, even making sure all the major programming languages are bullshit - people who aren't into bullshit are very strongly and carefully blocked out.