Out of nearly-off-topic-curiosity, does this language have a website(page)? Was it new when you started your project? Have you been able to use libraries from other languages? Or is this really an island of 5 people? (Suddenly that sounds like Gilligan's island for devs)
I would prefer to keep the name out of the comments, just to prevent mud-slinging. That said, it is a proprietary language built for a niche data analysis market. It is basically a BASIC variant that probably came out around 95, and the application I now work with was started around that time. It was probably a great choice at the time, as its lack of extendibility was balanced by its performance and feature list in this particular space (GIS). Unfortunately, GIS has traditionally been a huge pain to develop for. The proprietary libraries really sink their teeth in on licensing and the open source modules are notoriously difficult to get up and running, especially in a server environment.
In response to this, I began building an open source javascript library that is nearing 1.0, and I am using it in new production work with great success. I chose javascript (node.js specifically) due mostly to performance with IO (huge in GIS) and its awesome ecosystem around npm. I am finding it much easier to build that one tricky library you need than to get the one tricky library for free and build everything else.
As to the 5 people... yep about 5-10, and my company employed a few of them. The rest are academics. The 'bus-factor' was pretty high before we switched off of it.
