Over the past twelve months, 132 developers contributed new code to FD.io. This is one of the largest open-source teams in the world, and is in the top 2% of all project teams on Open Hub.
The first lines of source code were added to FD.io in November, 2015. If this young project has had recent activity, then it likely has passed its critical early start-up period, and has become established. The project still may be rapidly changing, innovative and exciting, and finding its focus.
As this project matures, a longer source control history in conjunction with recent activity might indicate that the project has enough merit to hold contributors 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 FD.io might actually be older than the source control history can reveal. Many new projects begin by incorporating a large amount of source code from existing, older projects. You might be able to tell whether this is the case by looking for a rapid rise in the amount of code early in the project's history.
FD.io is written mostly in C.
Across all C projects on Open Hub, 19% of all source code lines are comments.
This holds true for FD.io as well. It contains the same ratio of comment lines to code lines as the majority of C projects in Open Hub.
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.