Which browser is easier to develop plug-ins for? Chrome or Firefox? [closed]
Chrome. It has a fast and easy learning curve. Start here: https://developer.chrome.com/extensions/getstarted.html . The built in development tools allows you to debug your own code in a matter of a click. And ctrl+r actually refreshes your extension code.
Firefox extensions are much more complex and harder to develop. You will need to set up a development environment with many custom settings and "developer's extensions" and it will be very hard to actually debug your code.
Update: an interesting real-world blog post comparing Chrome, FireFox and Opera extension building: http://blog.nparashuram.com/2011/10/writing-browser-extensions-comparing.html
Firefox's new WebExtension API means that extensions written for Chrome should, for the most part, work in Firefox with minimal changes.
I found this question when researching how to start developing extensions, so I haven't had a chance to work with anything yet, so YMMV.