GeoSynchrony GIS framework. You can try before you buy. It can be used for production planning. Very reasonably priced. I can't imagine working without it anymore.
Packages are either reusable code or programmer tools.
Add links to new packages and add your comments about the ones already here. Here are some simple rules that can keep us from getting overrun by links. If a link doesn't lead to code you can run or instructions on getting the code, then put it on Research projects that use Smalltalk , Commercial projects that use Smalltalk , or maybe just Projects . Try to put a link on one of the topic pages listed at the top of this page. Only put it here if it doesn't fit any topics.