A very fine read is this review of the TBS/RPG Hale. Its first comment was written by the sole developer.
Flare 0.15 introduces outdoor areas. Translation submissions are welcome now as well. Look for instructions and examples in this post.
Freedroid RPG recently released the second candidate for 0.15. Soon it will be ten years since registration of the freedroid project on SourceFroge.net.
Checking on Scourge 2, another open source RPG title, there has been no development for eight months.