Safe World's source used to live on GitHub. That account was suspended without notice and without a stated reason, so those links no longer work. We are appealing it, and moving the project onto infrastructure we run ourselves either way.
Nothing was lost — the full history, every release, and the blocklists are all intact and are now hosted here rather than on someone else's platform. The apps you have installed were never affected: they keep blocking from the lists they shipped with, whatever happens to any account.
A public mirror is being set up. Until it is, ask for access and you will get a clone — the licence has not changed and neither has the intent: you can read every line of what runs on your device.
Safe World's whole claim is that it works on your device and reports nothing back. That claim is only worth anything if you can check it. Losing the public repository does not change what the software does, but it does temporarily make that harder to verify — which we would rather say plainly than quietly drop the link.