Harper in Firefox Through SpellBolt

We designed Harper to be the ultimately portable grammar checker, but we're still working on living up to that promise. As the Harper Chrome extension becomes more capable day-by-day, it has one critical weakness: it doesn't support Firefox. Since Chrome has a much larger market share, it isn't a priority at the moment (although we accept contributions).

This is a wonderful example of where the open-source nature of the Harper's core engine really shines. Someone has taken harper.js and put it into their own extension. SpellBolt is a Firefox extension that delivers Harper's fantastic grammar checking straight into your Firefox browser. My initial testing shows that it's a solid extension.

I am delighted to see people making use of the pluggable architecture Harper has adopted, and I can't wait to see what SpellBolt does next.