Lots of these coming up recently. We launched ours in November: https://onetimesecret.com/ https://onetimesecret.com/ Here's another that opensourced their co

Lots of these coming up recently. We launched ours in November: https://onetimesecret.com/ https://onetimesecret.com/ Here's another that opensourced their code last week: http://pwpush.com/ http://pwpush.com/