https://opencollective.com/libspng/contribute
Contribute to libspng - Open Collective
These are all the ways you can help make our community sustainable.
contributeopencollective
https://nlnet.nl/project/libspng-animated/
NLnet; libspng APNG
nlnetapng
https://packages.debian.org/search?keywords=libspng-dev
Debian -- Package Search Results -- libspng-dev
debian packagesearch resultsdev