CrowdGrader vs TEAMMATES

CrowdGrader is a web service for students to submit homework and peer-grade classmates’ work while instructors oversee assignments and keep control of final grades. It combines peer assessments into a consensus grade for each submission and removes outliers. A student’s crowd-grade reflects both the grade received and how accurately that student grades other submissions. Students can create reports, math, or code in the built-in editor, or upload files such as ZIP archives. Reviews are anonymous: reviewers do not see authors’ identities, and uploaded files are renamed. Instructors can monitor similarities through clusters and side-by-side submission comparisons. Institutional subscriptions include optional LMS integration, access monitoring, and long-term data retention for auditing. Student work is transmitted over HTTPS; Google authentication uses only the user’s email address for identification. The free instructor-sponsored plan covers up to 20 students per assignment. Other listed options include $2.99 per assignment for up to 35 students, $6.99 for up to 100, and $13.98 for unlimited students.

TEAMMATES is a web-based peer feedback management system for instructors seeking flexibility beyond their main learning management system. Instructors and students are its intended users, and the project describes the system as highly configurable, including for pedagogical research into peer feedback mechanisms. The service is hosted on Google App Engine and is a joint effort supported by the National University of Singapore School of Computing.

The Free plan costs nothing. The team says it will provide the service free for as long as it can, but may change or end it at its discretion. Its terms say the team will try to protect user data while advising against storing information users want to keep confidential. The service is provided without warranty, and users are responsible for risks arising from use. The features page describes a workflow, but its diagrams appear as images without accompanying text. The listed platform is web.