Loader.io - Loader.io is a simple cloud-based load testing service
HEY - Email at its best, new from Basecamp.
WebLOAD - WebLOAD - The most flexible and cost effective software for enterprise load, stress and performance testing, integrated with DevOps processes. Click for details
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
Apache JMeter - Apache JMeter™.
InstAddr - Disposable email address application.