About 7 months ago I compared the lines of code in the edu 2.0, Moodle and Sakai code bases. Since then, we've added a large number of new features to edu 2.0 with an emphasis on support for schools, departments, and a slew of improvements across the board.
Because of this, there's been a noticeable increase in adoption and we just passed the 20,000 member mark. About 1,000 new members join every week and we anticipate that this will accelerate.
For fun, I gathered the latest statistics for edu 2.0 and compared them against the old ones:
Overall, the code base has gone up by around 50%. We've continually refactored the code and it's actually simpler than it was before. Maintaining simplicity (both from the user perspective and the developer perspective) becomes increasingly important as functionality increases. We do a code review at least once a day in order to continually improve the architecture.
One of the things I'm particularly proud of is how small the edu 2.0 code base is relative to Moodle and Sakai. Here's the updated comparison:
The Moodle and Sakai LOC statistics are out of date now, and I suspect that they've both grown larger over the last 6 months.