Interesting coin comparison between two eco-friendly focused Crypto-currencies:

SLR ("Solarcoin") vs EGC ("EverGreenCoin")

SLR Available Supply @ 28 April 2016 PST: 34,297,766
EGC Available Supply @ 28 April 2016 PST:  8,669,327

SLR Total Supply: 98 Million (PoW/Premine)
EGC Total Supply: 12 Million (PoW phase ending soon!)

SLR Algorithm: PoS
EGC Algorithm: Hybrid X15 PoW/PoS

SLR Wallet/s: Windows, Mac, Linux - Android 'No'
EGC Wallet/s: Windows, Mac, Linux - Android 'No'

SLR Price @ 28 April 2016 PST: 0.00010472 Bittrex (24hr High)
EGC Price @ 28 April 2016 PST: 0.00000700 Bittrex (24hr High)

...Quite a lot of headroom for EGC increase...