I built a tool for myself and some relatives. It's a windows keyboard tool that allows someone to instantly type accent marks, other diacritics and often used special characters. No key combinations to remember, no keyboard switching in the regional settings.
I am a french expat in Canada and really created it for my own daily use. Starting from there I wanted to test if there would be some interest by others, so I purchased a web template and quickly setup.
My problem is that I don't know where to promote it. When I google some key keywords like "clavier qwerty accents" (this is in french because my beta first targets french people), the results I get usually are forums where people need help typing their accent marks. I can't simply go there, register and say "use keyxpat, it solves your problem". It's understood as spam.
Note that I will also need to target people from other countries (norwegians, germans, ...) and I can only do it in english since I don't speak these languages.
Something that could help thinking about it: a buddhist organization, which translates texts to from sanskrit (with a specific font under MS Word), would like me to add all accentuated sanskrit characters (because it's a nightmare for them), which is something keyxpat can do.
So, where would you go to talk about this tool?