Just completed an update of the Atto Chemistry Editor and Computer
Science plugins. Essentially, these just merge with the latest (Moodle
2.9) Atto Equation Editor JavaScript code. Should work with recent (2.7+) versions of Moodle.
Available from:
https://moodle.org/plugins/stats.php?plugin=atto_chemistry
https://moodle.org/plugins/stats.php?plugin=atto_computing
Or
https://github.com/geoffrowland/moodle-editor_atto-chemistry
https://github.com/geoffrowland/moodle-editor_atto-computing
Also posted in Mathematics Tools forum. Unsure of the best place. Apologies for any duplication.