Light Table [1,2] attracted a lot of attention here [3] several years ago. The author went on to make another system called Eve [4].

1. https://en.wikipedia.org/wiki/Light_Table_(software)

2. https://github.com/LightTable/LightTable

3. https://hn.algolia.com/?q=light+table

4. https://hn.algolia.com/?q=eve+chris+granger