I'm not the person you're asking, and I do most of my work on a PC running Linux now, but Hammerspoon is one of a few things I really miss about OSX.
I mostly used it to create small utility applications for the menu bar. Probably the most useful one was a Bitbucket pull request checker, which would monitor the status of open pull requests and display information about which PRs I hadn't yet viewed or approved, number of new comments since I last viewed the PR, build status etc. My job involves frequently reviewing PRs so this was really helpful for me.
I've tried rewriting this app for polybar on Linux but it's much more difficult to maintain, and sadly too much effort for me to bother with right now.
I haven't tried Keyboard Maestro - at a glance it looks really good, but doesn't appear to be open source like Hammerspoon. I can't tell whether it enables you to create stuff for the menu bar.
I'm pretty sure Hammerspoon can do anything KM can, but I imagine KM is easier to use, particularly if you're not into programming.
I mostly used it to create small utility applications for the menu bar. Probably the most useful one was a Bitbucket pull request checker, which would monitor the status of open pull requests and display information about which PRs I hadn't yet viewed or approved, number of new comments since I last viewed the PR, build status etc. My job involves frequently reviewing PRs so this was really helpful for me.
I've tried rewriting this app for polybar on Linux but it's much more difficult to maintain, and sadly too much effort for me to bother with right now.
I haven't tried Keyboard Maestro - at a glance it looks really good, but doesn't appear to be open source like Hammerspoon. I can't tell whether it enables you to create stuff for the menu bar. I'm pretty sure Hammerspoon can do anything KM can, but I imagine KM is easier to use, particularly if you're not into programming.