Keys.lol is a project made to educate people about Bitcoin and 256bit security. It is also pretty fun to try and find an active wallet.
The code that generates the keys is 100% open source, licenced under the MIT licence.
If you want to support keys.lol, you can make a donation. Any support is greatly appreciated.
1MSGtvPJ5nrtdqhsmnn4Fb6KjmkySLNGotView on Blockchain.info
0xC70e876b14eB5878Fe7Ae85431758c5b855902FcView on Etherscan
You can also use this address to donate any ERC20 token.