The author linked to the site something like 37 times in the article. It made me not want to click through, thinking the article was just a shill blog post. Your short comment reinforces this.
Why exactly do you think Frida looks interesting?
Why exactly do you think Frida looks interesting?
On MacOSX, there is the SIMBL project which enables such a plugin architecture for any OSX apps. E.g. you can get extra features like window-always-on-top, window-transparency, etc. And you can automate / script some apps which would not be scriptable otherwise or to such extend. Or you could add specific features to applications. E.g. Dropbox on MacOSX uses a technic like this to display some state-icon of its Dropbox directory in Finder.
Some links to SIMBL: https://github.com/norio-nomura/EasySIMBL https://code.google.com/p/simbl/wiki/SIMBLPlugins
SIMBL would inject other native code into to some app. In most cases you would inject other ObjC code.
I like the idea to dynamically script or mess around with an app. For that reason, I used SIMBL to inject Python + iTerm + PyObjC. That way, you can interactively interact with any app with Python. https://github.com/albertz/Pyjector
A similar project is this: https://github.com/albertz/FScriptAnywhereSIMBL
And this Frida looks like a similar more modern project with JavaScript and support for Windows, Mac, Linux, iOS and Android.
Speaking as its creator and maintainer, it's been a pet project for the last 5 years (7 if you start from frida-gum, the code instrumentation engine), but to this day it's still rather obscure considering its potential. I regret not spending more time marketing the project over the years, so these days I'm doing my best to make up for that. :)