I want to create a list of my most distant ancestors (= ancestors without known parents) of each family branch from a Gedcom file. We call them Spitzenahnen in German and some applications can create lists of these ancestors (Spitzenahnenliste) for further research. All these applications are Windows applications. Which tool can create such a list online (or on Mac)?
As mentioned in my answer to the meaning of "Spitzenahnen" in this question I did some searching on the translation Google and was able to find this based on it on GenWiki.
This program (Familienbande) is natively in German and is available Mac, Linux, and PC and specifically lists as one of its features. (Note:Link uses Google Translate)
Once you download it is has a English localization which I downloaded tried and it is only partially translated but usable and the help file is only in German. The FAQ can be run through Google translate.
Spitzenahnen: Vorlage erzeugt eine Tabelle aller Vorfahren einer Ausgangsperson ohne bekannte Eltern.
Patriarch: template generates a table of all ancestors of a starting person with no known parents.
Playing with a few minutes on a Mac it looks like you have to configure a Template and then use the export function to create one if you want a custom one, or you can download the pre-made HTML or TXT version templates for it from from their library of ready made templates on their site that are not included in the installation, specifically this HTML or this CSV Text one.
An example output of the program can be found here: http://www.familienbande-genealogie.de/FL-Beispiele/FL-Spitzenahnen.htm
You can use Gramps on a Mac. It runs in almost 40 languages, and it can create an end-of-line report in half a dozen different formats.
Alternatively as a Gedcom file is purely a text file it should be possible to find what you want by opening the file in a good text editor and using a Regex expression to search through the file and find what you want.
There may also be some online Gedcom parsers that do what you want. Try Tim Forsythe's site as a starter.