GuideGuide - GuideGuide is the Photoshop and Illustrator panel that makes working with guides.
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
Q2ID - Q2ID is an affordable InDesign plugin which allows user to convert and open QuarkXPress documents in Adobe InDesign.
Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
phpAlbum - phpAlbum.net is an Open Source PHP script which allows creating personal Photo Album / Gallery
RabbitMQ - RabbitMQ is an open source message broker software.