Sakai 25 Patch Highlights: February 2026 →

Solutions

We build the hard parts of open educational platforms

Longsight has spent years inside open-source LMSes and adjacent systems: assignments, tests and quizzes, gradebook workflows, SCORM runtimes, plagiarism detection, integrations, and the backend plumbing that keeps all of it standing up during the semester.

Sakai and open-source LMS engineering Assignments, Gradebook, and rubrics Tests & Quizzes and assessment flows SCORM 2004 runtime work Plagiarism detection from scratch Credentials and badging Concurrent systems Giant ring databases

Open-source LMS platforms, assessment systems, SCORM, credentials, and the infrastructure underneath them.

CredTrail public badge verification page

CredTrail

Open-source badging and public verification

Durable credentials that can live outside the LMS, with verification and standards-based delivery.

Sakai LMS dashboard template screenshot

Open-source LMS work

Assignments, quizzes, grading, and UI polish

QFlowLearn logo

In progress

QFlowLearn.com

A new QTI 3.0 authoring system focused on cleaner item creation, validation, and interoperability.

QTI 3.0 item authoring Validation and packaging Interoperable export Assessment workflows

Academic integrity

We have built plagiarism detection systems from scratch, not only integrations to someone else’s.

Platform engineering

Concurrent services, queue processors, and large ring-database work when the workload demanded it.

Semester-critical feature work

We spend time where institutions actually feel software quality: assignments, grading, rubrics, tests, quizzes, mobile usability, accessibility, and the admin screens that support teams live in.

Interop that has to keep working

Our work regularly crosses standards and boundaries: SCORM, LTI, SSO, SIS sync, content migrations, reporting pipelines, and newer credential standards like Open Badges 3.0 and wallet delivery.

Deep backend engineering

We also build the less visible machinery: concurrent processors, queue-backed services, specialized data flows, and the kind of big ring-database work you only do when ordinary CRUD stops being enough.

Where we go deep

The work is broad, but it is not generic.

We work inside mature open-source platforms, beside them, and underneath them. That means product work, interoperability work, and serious backend work, often in the same project.

Open-source LMS product engineering

Assignments, grading, quizzes, rubrics, and the real semester path

We have spent a lot of time in open-source LMSes, especially Sakai, building and repairing the paths that faculty and students use every day. That includes Assignments, Gradebook, Tests & Quizzes, rubrics, portal navigation, accessibility, and the administrative edges that determine whether support tickets pile up.

Assignments Gradebook Tests & Quizzes Rubrics Accessibility

Assessment engines and authoring

Timed assessments, item logic, QTI, and authoring workflows

Assessment work is its own discipline. We have been deep in timing logic, accommodations, statistics, scoring, question behavior, and authoring constraints. QFlowLearn extends that work into a dedicated QTI 3.0 authoring system built for cleaner authoring and better interoperability.

QTI 3.0 Item authoring Accommodations Statistics Validation

SCORM and content portability

SCORM 2004 runtime work that can survive real use

We have modernized SCORM runtime flows, launch behavior, site-to-site import, and REST-backed player plumbing so packaged content is easier to debug and easier to carry forward.

Read the SCORM work →

Academic integrity systems

Plagiarism detection that is actually ours

We have built plagiarism detection from scratch, including the workflow and system behavior underneath it, not just the last-mile integration to an external service.

Platform architecture

Concurrent systems, queues, and big weird data structures

Some projects need more than a clean UI and a sensible schema. We have built high-concurrency systems, queue-driven services, and large ring databases where the traffic shape and data model called for them.

Current work

We are still building, not only maintaining.

Some of our best work right now sits just outside the traditional LMS footprint: durable credentials, cleaner assessment authoring, and platform tooling that treats standards as first-class architecture instead of afterthoughts.

CredTrail public badge page

CredTrail

Open-source badging and learner-owned credential delivery

CredTrail is our open-source credential layer for institutions that want badges and verifiable records to live outside the LMS. Public verification routes, standards-based APIs, exports, and wallet flows are part of the product shape, not retrofits.

QFlowLearn logo

QFlowLearn.com

A new QTI 3.0 authoring system

QFlowLearn is our newer assessment-authoring effort: a focused environment for QTI 3.0 item creation, validation, packaging, and export. The point is not just to author items, but to make interoperability feel normal instead of fragile.

QTI 3.0 item authoring Validation and packaging Interoperable export Assessment workflows
Sakai dashboard template screenshot

Still deep in LMS work

The semester does not care whether the work is glamorous

We are still doing the careful, high-value work inside mature LMS platforms: fixing grading edge cases, tightening assessment behavior, cleaning up accessibility issues, modernizing interfaces, and making content workflows more durable.

Work with us

If you need someone who can work at the feature layer and the system layer, we should talk.

We can help inside an existing LMS, around it, or on the new products that need to outlast it.