The first lines of source code were added to ExtCalendar 2 in 2003. This is a relatively long time for an open source project to stay active, and can be a very good sign.
A long source control history like this one shows that the project has enough merit to hold contributors's interest for a long time. It might indicate a mature and relatively bug-free code base, and can be a sign of an organized, dedicated development team.
Note: The source code for ExtCalendar 2 might actually be older than the source control history can reveal. Many projects begin by duplicating a large amount of source code from an existing, older project. You can usually tell whether this is the case by looking for a rapid rise in the amount of code early in the project's history.
ExtCalendar 2 is written mostly in PHP.
Across all PHP projects on Ohloh, 31% of all source code lines are comments. For ExtCalendar 2, this figure is only 17%.
This lack of comments puts ExtCalendar 2 among the lowest one-third of all PHP projects on Ohloh.
A high number of comments might indicate that the code is well-documented and organized, and could be a sign of a helpful and disciplined development team.
The source code for ExtCalendar 2 appears abandoned, and has not been changed in over a year.
About one-fourth of all projects on Ohloh have been abandoned.
For this measurement, Ohloh considered only recent changes to the code. Over the entire history of the project, 3 developers have contributed.