Bughost - - Web-based bug tracking application which provides a centrally-located repository of bugs found in applications.
BugMonitor.com - - Hosted bug tracking, issue management, and defect management for software developers and QA personnel. 45 day trial available.
Bug-Track.com - - Bug tracking system with email notification, file attachment, tracking history, bilingual pages, 128-bit encryption connection and advance customization.
Defect Tracker - - Subscription-based web tracking of software defects. Clean user interface, reporting, and rule-based email notification.
Elementool - - Hosted bug and defect tracking and managing tool. Helps developers and testers to track and manage bugs and features. (elementool Inc..
PT Online - - PT Online is a hosted bug and defect tracking solution using ProblemTracker. Other applications include helpdesk, support, workflow, and process and change management.
SourceAction - - Secure online issue tracking application that allows companies to track, manage, resolve, and report on defects and enhancement requests from customers and internal users.
Squish - - Web-based system for bug and issue tracking, and project management.