The best websites like Bitmessage.org. Top Bitmessage.org alternatives 2020. Explore 16 alternatives to Bitmessage.org and read 10 reviews now on SameAs.NetBitmessage is an open-source client that uses the communication protocol of type P2P. It enables the dispatch of encrypted messages to many subscribers or even to a single person. However, the site is trustless and decentralized, implying that the users should not have absolute trust for root certificate authorities and similar entities. Bitmessage makes use of a sophisticated authentication tool, significantly decreasing the chances of the message sender from being spoofed. The message receiver, as well as the sender, are but a few of the non-content data that the site purposes to hide from individuals like those operating wiretapping programs with no warrant. New users are advised to first read the whitepaper before using the site. The client is available for Linux, OS x, and Windows.