Jupiter

Jupiter is an open-source learning record store for teams collecting learning activity through xAPI or Caliper. It fits educational institutions and research organizations that can run their own infrastructure and want built-in analysis and operational visibility. The main trade-off is between software-cost freedom and the responsibility of operating a self-hosted service.

Overview

Jupiter accepts Caliper API and Experience API payloads in a cloud-capable repository designed for learning records. Transcordia describes the system as highly scalable and fault tolerant, useful characteristics for organizations expecting sustained event traffic, although self-hosting still requires responsibility for deployment and maintenance. The project is released under the MIT license, and the maker welcomes coding contributions and pull requests, making it a practical option for organizations that value an open development model.

Key features

Metis querying and reporting

The included Metis interface lets users build queries and inspect metrics instead of treating Jupiter as storage only. Query results can be shown as visualizations or tables and exported in multiple formats. That supports analysis and sharing with people who need readable outputs, while the open-source interface can be adapted by teams with the relevant technical skills.

Cluster monitoring

Metis also monitors cluster health and can notify users about network or hardware failures. This gives operators a way to spot infrastructure problems, which is especially valuable when learning data supports active programs or research. It does not replace the need for staff who can respond to alerts and manage the underlying deployment.

Hosted route

Jove is Transcordia’s cloud deployment, built on Amazon Web Services and powered by Jupiter. Transcordia says it can handle tens of thousands of learning events per second, making it the more suitable route for teams that need hosted capacity rather than maintaining Jupiter themselves. Its event-based pricing should be considered alongside that convenience.

Pricing

Jupiter itself is free and open source, with no software fee. The cost is shifted toward infrastructure and administration when you self-host, so this model suits organizations that already have deployment capability.

The free Jove tier is suitable for smaller pilots or workloads staying within one million annual events. Once usage exceeds that allowance, charges are tied to monthly event volume, so high-throughput deployments should budget for variable bills rather than a fixed subscription.

Platforms

Jupiter is available as self-hosted software with a web interface. Jove provides a cloud deployment for teams that prefer a managed environment.

Who it's for

Jupiter is aimed at educational institutions, research organizations, and other groups building learning record store infrastructure. Choose it when xAPI or Caliper compatibility, open licensing, and control over deployment matter more than turnkey operations. Teams without infrastructure capacity should favor Jove or another hosted service.

Pros and cons

Pros

• MIT-licensed and free: avoids software charges and permits community-driven modification.
• Two learning-data standards: accepts both xAPI and Caliper payloads, useful when systems use different specifications.
• Analysis built in: Metis combines query building, visual and tabular results, and exports.
• Operational alerts: cluster-health monitoring can notify operators about network or hardware failures.

Cons

• Self-hosting work: Jupiter leaves infrastructure operation with your organization.
• Hosted usage is metered: Jove is free only up to 1M events per year, then charges per 10,000 monthly events.

Alternatives

Browse Learning Record Store Software for a wider comparison. Veracity Learning is a freemium, multi-platform choice with a free Lite plan supporting five LRSs and paid Starter pricing at $100 a month. SQL LRS is another free, Apache 2.0 open-source, self-hosted option, with support services quoted separately. Cluelabs LRS suits readers seeking a freemium web and mobile-oriented service. Mosra offers a free launch-period plan with unlimited lessons and listed exports. xh is a free open-source command-line HTTP client rather than a full learning record store. ADL Open Source LRS is a free proof-of-concept intended for a small number of users. Ralph provides an MIT-licensed Python package and Docker image. Sereni LRS has a free plan capped at 100,000 xAPI statements or events and 1 GB of storage, with unlimited LRSs and reporting.

Verdict

Choose Jupiter if your institution or research team wants an MIT-licensed LRS that can ingest xAPI and Caliper data while providing querying, exports, and health monitoring. Look elsewhere if you need a fully managed service without operating infrastructure or metered event costs; in that case, compare Jove’s allowance and usage charges with other hosted LRS options.