I love software and non software tools that help me in some way.
Gravatar - Attach an image to an email and websites supporting Gravatar will simply pick up the image you specified.
Calendly - Schedule meetings.
Styleguide - Tool to make creating and maintaining style guides easy.
UFree - Sort out what day to meet.
Updwn - See what everybody thinks.
Leetchi - Online money pot for group gifting & personal fundraising.
Paddle - Checkout, subscriptions, licenses, promotions and analytics that work well together.
Git.io - URL shortener by GitHub.
Sourcegraph - Code search and intelligence, self-hosted and scalable.
Coverr - Beautiful, free videos for your homepage.
Loom - New kind of work communication tool that helps you get your message across through instantly shareable videos.
Habitat - Modern applications with built-in automation.