Powerful Web-Based Library System

Unlimited simultaneous access from any device, anywhere—no per-seat licensing or installs. Just open your browser and manage your library.

Everything Your Library Needs. Nothing You Don't.

Manage your entire library from one intuitive, web-based platform—accessible on any device.

Catalog Faster

Create accurate records quickly with powerful search, editing, and batch tools.

Circulate Without Limits

Keep services running anywhere with offline mode, automation, and flexible rules.

Drive Discovery

Engage patrons with a modern, visual catalog built for exploration and self-service.

See What Matters

Turn data into insight with built-in reports and customizable analytics.

Manage Patrons Effortlessly

Streamline records, automate workflows, and integrate with your existing systems.

Work From Anywhere

Support staff and patrons with mobile access, real-time updates, and notifications.

100% browser-based

No per-seat licensing

Mobile apps included

Built-in integrations (SIP2, NCIP, Z39.50)

Find the Right Fit for Your Library

Explore how Atriuum is tailored to your specific environment.

K-12 Schools

Built for student success, classroom integration, and easy management.

Explore K-12 Solutions →

Public Libraries

Engage your community with powerful tools and seamless experiences.

Explore Public Solutions →

Academic Libraries

Support research, discovery, and advanced cataloging workflows.

Explore Academic Solutions →

Special Libraries

Flexible tools for unique collections and specialized needs.

Explore Special Solutions →

See Atriuum in Action

Schedule a personalized demo and discover how Atriuum can transform your library operations.

Schedule a Demo Call 1-800-219-6571

Stress-Free Setup, Hosting, & Maintenance

At Book Systems, we use the latest cloud-based technology to reduce your costs and free up resources. When you factor in the price of purchasing a new server, hiring IT personnel, and the work associated with storing and backing up your data, you'll immediately see the benefits of using our hosting options.

ASP

As an Application Service Provider (ASP), we deliver powerful and flexible technology that is entirely results oriented. Along with expedited maintenance, we also perform daily database backups for safekeeping.

No Server Required!

Unlimited / 24-7 User Access

Requires Only a Browser with Internet Connection

Express

Our Express Software-as-a-Service (SaaS) is a subscription-based hosting service that provides an affordable hosting option. Make your library's technology work effortlessly at a competitive price.

Recognized by G2 Users

Atriuum is consistently recognized for outstanding support, user satisfaction, and momentum in the library software market.

Best Support

Spring 2025

Momentum Leader

Spring 2025

Best Relationship

Spring 2025

Users Love Us

Spring 2025

What Our Customers Are Saying

Real feedback from real libraries. See why so many trust Book Systems to keep their libraries running smoothly.

“We love Atriuum just like it is!

Everything is working great, and our patrons love our OPAC. We take full advantage of all the backgrounds to keep everything ‘fresh’. I am not sure what more I could say to Bruce? We are very happy with it, as is. Let me know if there is something more, but we are very happy.” Lisa BellDirector — Sunfield District Library

“Cassidy Anderson supported me through trying to change the barcodes… She is incredible and so knowledgeable! I am a new librarian at a school and there were approximately 100 books that haven’t been processed yet or shelved. I wanted to get them in the kiddos hands and Cassidy walked me through and helped me tremendously… She’s a valuable and knowledgeable employee and I was blessed to have her to help me. Thank you!” Amber HeathLibrarian — North Middle School

“Please let everyone know what a great experience I had working with Nathaniel Herring. He went way above and beyond, and I just can not praise his skills enough. I just wanted everyone to know this!

Thank you for your excellence, Nathaniel Herring!” Lisa HopkinsAdult Services Librarian — Seabrook Library

“Hey there Robin,

I am loving our new scanner!!! Thank you so much for helping me find something that is even better than what we already have. I would love to order another one…

Thanks for your help!” Christy BartelsTeacher Librarian — Clay Elementary and Delaware Elementary

Atriuum Stax — Staff App

A modern workspace for library staff.

From circulation tasks to reports to patron lookups, Stax puts the tools you use most—right at your fingertips.

Learn More About Stax

Librista — Patron App

Search, access, and manage your library account—anytime, anywhere.

Library on the go—with your account, holds, due dates, and more. All from your phone or tablet.

Learn More About Librista

Ebook & Audiobook Integrations

APIs provide Atriuum the ability to seamlessly integrate with a variety of digital eBook and AudioBook providers.

SIP2/NCIP & Other Integrations

Unlike other ILS vendors, Atriuum includes and supports SIP2, NCIP, Z39.50 protocols, SSO, and other industry standards at no additional cost.

Atriuum can integrate with any of the following types of solutions:

RFID/Self-Check Systems
Locker/Kiosk Systems
Time/Print Management
Debt Management Service
Inter-Library Loan
Online Payment Systems
Student Information Systems
Google, Classlink, and Clever SSO

Public & Academic Libraries

Full-Featured Library Automation Built to Scale

Enterprise-grade tools for public and academic libraries of any size—from single branches to multi-system consortia.

Schedule a Personalized Demo View Product Catalog

Everything You Need to Power Your Library

Robust tools and seamless integrations to simplify operations and enhance every library experience.

Single-location, multi-branch, and consortium support with centralized administration
Full MARC cataloging with built-in Quick Catalog (Z39.50) searching across multiple library collections, including LOC.
Comprehensive circulation with offline mode for uninterrupted service
100+ OPAC themes, including Gallery OPAC, our mobile-responsive design
Interlibrary loan management and resource sharing
Patron account management & self-service options

Mobile apps included for patrons and staff—Librista and Stax eliminate the need for third-party apps
Digital content & enrichment API integrations (OverDrive, hoopla, CloudLibrary, Novelist Select, Syndetics)
Fine and fee management with payment processing
Statistical reporting and custom report builder
SIP2 and NCIP protocol support for third-party integrations
RFID integration for automated workflows
SSO, LDAP, and Active Directory authentication

Built for Performance, Efficiency, and Engagement

Make Data Work for You

Gain real-time insight into circulation trends, collection performance, and patron engagement.

Integrate Without Limits

Connect seamlessly with RFID, Self-Check, Time/Print Management, ILL,
& third-party solutions.

Serve Your Community Anywhere

Deliver full library services across branches, campuses, and mobile environments.

Patron Discovery

Gallery OPAC —
A Better Way to Search

Transform how patrons discover, explore, and interact with your collection.

Visual, mobile-responsive interface
Intuitive search with smart filtering
Enriched content that drives engagement
Patron dashboards with self-service tools

Explore the Gallery OPAC Experience →

atriuum.booksys.net/opac

Designed to increase engagement and circulation.

From discovery to engagement to daily operations—Atriuum connects every part of your library.

Connected Experiences for Patrons and Staff

From mobile access to staff workflows, Atriuum keeps your entire library connected.

Patron Engagement

Librista — Patron App

Seamlessly extends your Gallery OPAC experience to mobile.

Search the catalog & place holds
Digital library card & account access
Manage checkouts, holds, and fines
Receive real-time notifications
Branded to match your Gallery OPAC for a seamless experience

Learn more about Librista →

Staff Productivity

Stax — Staff App

A modern workspace that keeps staff productive wherever they work.

Circulation from anywhere
Patron lookup & account management
Offline mode for uninterrupted service
Works on mobile, tablet, and web

Explore Stax Workspaces →

Coming Soon

More Stax Workspaces
on the way.

Stax Acquisition Workspace

Streamline acquisition workflows from request to order.

Stax Catalog Workspace

Simplify cataloging and metadata management.

Stax Inventory Workspace

Track and manage your collection with streamlined inventory workflows.

Ready to See It in Action?

See How It All Works Together

Schedule a personalized demo and experience the full power of Atriuum in your environment.

Schedule a Demo View Product Catalog

Call 1-800-219-6571