User wg9s offers several current SeaMonkey builds from latest source for WINDOWS, MAC and Linux.
SeaMonkey 2.53.2 is the new successor of 2.53.1, German version works fine for me on WIN, English Version and other OS not (yet) Tested by me.
Reports on Expereience are welcome, but please be aware that you use those builds on your own risk. I recommend to create a backup of your user profile before you start testing those builds.
SeaMonkey Internet Suite 
2020-01-08 at 12:32
👍 SeaMonkey 2.53 works really fine. I have been using it since 2018, since beginning of 2019 for my daily work. Sometimes the German Version caused some trouble when I forgot to drop old Language related Extensions before update, but the normal work with Browser, Email Client and Chatzilla is without significant problems. I am happy with 2.53, now with 2.53.2 on WIN7 ☺.
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