Ext JS. Jack Slocum is building a business around his excellent Ext JavaScript library (which can now run on top of YUI, jQuery or Prototype). The library itself is LGPL, but you can pay for a commercial license and support.
Recent articles
- The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
- Open weight LLMs exhibit inconsistent performance across providers - 15th August 2025
- LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025