DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
Google Open Source - All of Googles open source projects under a single umbrella
Lipsum - One of the oldest and fastest 'lorem ipsum' (random text) generators.
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
Lipsum.pro - The superfast Lorem Ipsum text generator
Open Source @IFTTT - A collection of IFTTT OSS projects.