CrowdGrader vs WebPA
CrowdGrader
crowdgrader.comWebPA
github.comSide by side
| Figure | CrowdGrader | WebPA |
|---|---|---|
| Price from | $0.17/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 11 | 0 |
| Spec score · Peer Assessment Software | 9.0 (#1) | 6.9 (#13) |
| Purpose | CrowdGrader lets students submit and collaboratively peer-grade homework, while instructors monitor assignments and retain control of final grades. | WebPA is an online peer assessment system for student teams, using peer and self-grading to help determine individual grades from a group mark. |
| Support | The maker's homepage provides a contact email and phone number, and educator testimonials describe responsive help from the founder. | The project site says Loughborough's support for WebPA has ended and points users to archived documentation and a JISC mailing list for community support. |
Plans
CrowdGrader
- FreeFree
- Free (instructor-sponsored)Free
- Student subscription$1.99 a year
- Student-supported assignment$1.99 a year
- Small$2.99, paid once
- Small (instructor-sponsored)$2.99, paid once
- Medium$6.99, paid once
- Medium (instructor-sponsored)$6.99, paid once
- Large$13.98, paid once
- Large (instructor-sponsored)$13.98, paid once
In their own words
CrowdGrader
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.
WebPA
WebPA is an open-source, self-hosted web system for peer and self-assessment in higher-education group work. It combines peer assessments, self-assessments, and a group mark to calculate individual grades, with rubric scoring and moderation tools. Administrators download the application and configure a local instance, database credentials, and environment variables. The latest version lists PHP 7.4 or 8.0 with MySQLi, Sessions, and XML extensions enabled; Composer and the repository release page provide download routes. Standard installation does not include LTI support, but a separate connector can link WebPA with LTI-compliant environments such as Blackboard Learn, WebCT, and Moodle. Where services are available, it can synchronize memberships, groups, grades, outcomes, settings, enrolments, and timestamps; Moodle and Canvas membership and group services can use their APIs. WebPA is free and licensed under GNU GPL version 3. Loughborough support has ended, with archived documentation on GitHub and community support directed to the JISC mailing list.