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FOLIO

An open-source library services platform for multiple library workflows

Last Updated 9/7/2026

About FOLIO

FOLIO is an open-source library services platform built jointly by libraries, developers, and vendors for modern and traditional resource-management needs. The platform uses an API-driven architecture, with the OKAPI API gateway connecting modules and tenant-management interfaces, and covers library workflows including metadata management, acquisitions, electronic resource management, circulation, and reporting. The project advances its capabilities through ongoing new-version releases, with community members jointly contributing to roadmap priority setting. Official pages state that the platform offers multiple hosting and support partnerships, but the current collection evidence provides no software pricing or free-license information.

Best for

Libraries
Library developers
Library vendors
Library consortia and alliances

Best use cases

Metadata management

Collection acquisitions

Electronic resource management

Circulation and reporting

Features

API-driven architecture

Connects common modules, tenant management, and business interfaces through the OKAPI API gateway

Metadata management

Covers library metadata management workflows

Acquisitions and electronic resource management

Covers resource-management workflows such as Acquisitions and ERM

Circulation and reporting

Covers library workflows such as Circulation and Reporting

Pros

  • Open-source platform supporting community collaboration
  • API-driven, extensible architecture
  • Covers multiple library workflows
  • Offers hosting and support options

FAQ

FOLIO is an open-source library services platform built jointly by libraries, developers, and vendors.
The platform uses an API-driven architecture, with OKAPI serving as the API gateway connecting modules and tenant-management interfaces.

Tool Information

DeveloperFOLIO
Release Date9/7/2026
PricingFree