I’m a fan of open source and like to give back where possible.
Airbot
Airbot monitors the air quality data in Texas and provides a REST API. @kuukihouston uses this service to tweet air quality warnings.
Postgun
This is a BSD licensed Django package to help developers work with Mailgun. It’s API compatible, allows users to send email with Mailgun specific attributes (campaigns, tags etc …) and validate email addresses with ease.
Send email with custom Mailgun attributes and more.
SSPopupHeaderView
This is a small MIT licensed class to help developers duplicate UIPopovers, usually only available on iPad, on iPhone.