You can write NPAPI extensions for Chrome - you might nevertheless not be able to publish them on the Chrome extension directory. I've been working on extensio

You can write NPAPI extensions for Chrome - you might nevertheless not be able to publish them on the Chrome extension directory. I've been working on extensions for FF and Chrome recently - one of the biggest problems I had and tmk this is still the case (if it has not changed in the last 3 weeks) that it is in the moment extremely complicated to debug FF extension with the latest versions of FF. Venkman e.a. don't work with these and compiling a 64bit Windows FF debug version (working with the VS debugger) was the only way we found to get towards that. And this for itself is complicated enough (VS2008 SP1) - when you have compiled debug versions of 64bit FF and Chrome you will realize that it is like night and day reg. documentation (up-to-date and consistent), support and effort. There is a lot the Mozilla guys have to work on in this area (rather sad - if I would have had more time to spend on that I would have certainly contributed something back - maybe later this year). Note the error in the article: currently (latest FF versions) you can debug Javascript in the browser e.a. but not FF extensions. If you look a bit deeper into the documentation / google it you will find this specifically mentioned. If you want to try it out start Venkman e.a. and try to find your extension code.