Mad Tea Lab:

• Is an “Interactive Programming” environment
  
• Is nice for prototyping dsp and synthesis algorithms
• Is just a single html file (with javascript), if you want to expand it, just save it locally.
• Has examples, which might be more fun than reading here.
• Gives you fast access to javascript, html, math and graphics
• Is pretty old by now (began in 2004), and the code is terrible.
• Was created using a highly underrated development methodology called “scope creeping“
• Involves heavy use of innerHTML and eval()
• Is a web application that runs locally on your machine
• Can convert your lab session to an URL that you can bookmark or send
• Can reverse its flow to be used as a interactive solver
• Can do gamma corrected anti-aliasing
• Can also do interactive base conversion!
• Can Serve as recreational fun. For nerds.
• Has intentionally undocumented features
• Might have unintentionally undocumented features

Now, browse the examples, or check out the articles here to the right!