So, it seems that the #Littr (https://littr.me) project rebranded into #Brutalinks (https://brutalinks.tech).
Littr is the second “link aggregator” type of Fediverse software, after #Lemmy, as far the list in #Wikipedia is concerned: https://en.wikipedia.org/wiki/Fediverse
The newest additions in that list is #Lotide (https://sr.ht/~vpzom/lotide/) and #Kbin (Kevin?!).