Ok, was just because since most of them are in the bitbuchet i was not considering them third party...
I'm agree with you that there is space also for not open source tools, MacBoot and EOScard for what I know are not open also.
But I think that since Photoshop, Premiere and so on are not cheap, there will be people that will not buy it just to convert some HDRvideo or to make a custom cropmark, if they have a free alternative.
By the way for timelapses
LRTimelapse is nice, and works great with Lightroom I use it a lot and is donationware too

It was posted on the mailing list some time ago but can't remember by who.