ComPAIR vs Mobius SLIP

ComPAIR is a self-hosted web application for peer review in which students compare pairs of work and give feedback with both answers in view. Instructors can enable adaptive scores based on comparison outcomes and use them to assemble later pairs. The application has student, instructor, and system administrator roles with distinct permissions, plus rubric scoring and moderation tools. It supports LTI login, course membership, and grade updates; administrators configure LTI consumers with a key and secret. Documented authentication options also include username and password, CAS, and SAML 2.0. Learning analytics can be sent to a Learning Record Store through xAPI or Caliper, though both are disabled by default. The default attachment limit is 250 MB, with PDF, audio, video, and image extensions allowed. Administrators can manage whether instructors see student email addresses and CAS/SAML usernames; those fields are disabled by default. ComPAIR is open source under GPL-3.0 and freely available to download, install, and use. Its README documents deployment with Docker Compose, with access at localhost:8080. The tool is described as suitable for higher education and K-12 communities.

Mobius SLIP is a web-based social learning system for creating, reviewing, and critiquing assignments. Each assignment moves through Submission, Review, and Reaction: students submit work, assess peers' work, then respond to the reviews they receive. Students take both author and reviewer roles, and the process is anonymous unless the instructor directs otherwise. Analytics cover attainment, bias, controversy, and self-assessment accuracy for both roles. Suggested peer grades depend on review reliability, and instructors can override them. Instructors can monitor activity in real time, review work, provide feedback, and use course and assignment analytics to guide students. There is no stated cap on courses. Each student may upload one file of up to 10MB; videos must be hosted elsewhere and submitted as links. Students register with an instructor-provided code and a college or university email address. Instructors can upload a roster or allow self-enrollment, and students confirm registration by paying a registration fee. The product is paid, with pricing available on request, and instructor demos can be requested.