I'd like to support WinMerge but I don't have PayPal and only use cryptocurrencies for donations.
It would be nice if you considered allowing donations like Bitcoin Cash and Monero. I choosed Bitcoin Cash because of popularity and low transaction fees and Monero because it's imo the most anonymous cryptocurrency.
For Bitcoin Cash, I'd recommend Electron Cash as a light wallet unless you want to be extra secure and download the full 160 GB blockchain (which means running a full node wallet).
For Monero, I'd recommend the official Monero wallet running it as a full node wallet. The blockchain is "only" 50 GB. If you prefer not to download the blockchain, you can also use that wallet to connect to a remote node from which you'll get information.
If you have any questions about cryptocurrencies, let me know and I'll try to answer it to the best of my knowledge.
