An Integrated Library System (ILS) is the backbone of modern library operations, automating and streamlining essential functions. Here are the seven key features every effective ILS must provide.

1. Cataloging Module

Purpose: Create, edit, and maintain bibliographic and item records

Essential Capabilities:

  • MARC support (MARC21, UNIMARC, etc.)
  • Authority control for consistent data
  • Copy cataloging via Z39.50/SRU
  • Batch editing for bulk updates
  • Import/export capabilities

Why It Matters: Cataloging is the foundation of your library’s collection. A robust cataloging module ensures accurate, standardized records that patrons can easily discover.

Koha Advantage: Full MARC support, Z39.50 integration with major databases, flexible frameworks for different material types.

2. Circulation Management

Purpose: Handle checkouts, check-ins, renewals, and reserves

Essential Capabilities:

  • Self-service checkout compatibility
  • Automated renewals and notifications
  • Hold/reserve management with priority queuing
  • Fine calculation with flexible policies
  • Offline circulation for network outages

Why It Matters: Circulation is your library’s most frequent patron interaction. Smooth, fast circulation operations directly impact user satisfaction.

Koha Advantage: Highly configurable circulation rules, SIP2 protocol for self-checkout machines, mobile-friendly staff interface.

3. OPAC (Online Public Access Catalog)

Purpose: Provide patrons with searchable access to your collection

Essential Capabilities:

  • Advanced search with faceted browsing
  • Mobile-responsive design
  • Patron accounts for self-service
  • Social features (ratings, reviews, tags)
  • Accessibility (WCAG compliance)
  • Multi-language support

Why It Matters: The OPAC is your library’s digital storefront. An intuitive, feature-rich OPAC encourages collection usage and reduces staff workload.

Koha Advantage: Highly customizable interface, REST API for custom developments, built-in responsive design, excellent accessibility.

4. Acquisitions Module

Purpose: Manage purchasing, budgets, and vendor relationships

Essential Capabilities:

  • Budget management with funds and allocations
  • Purchase order creation and tracking
  • Vendor management with contact details
  • EDI ordering for electronic data interchange
  • Receiving and invoicing
  • Currency support for international orders

Why It Matters: Efficient acquisitions ensure you get the right materials at the right price, on time and within budget.

Koha Advantage: Multi-currency support, flexible budget hierarchy, EDI integration with major book vendors.

5. Serials Management

Purpose: Track periodicals, journals, and other continuing resources

Essential Capabilities:

  • Subscription management with prediction patterns
  • Issue tracking and claiming
  • Routing lists for circulation
  • Binding management
  • Vendor integration

Why It Matters: Serials require special handling due to their ongoing nature. Automated tracking prevents missing issues and streamlines claiming.

Koha Advantage: Flexible prediction patterns, automated claiming, integration with acquisitions and cataloging.

6. Reporting and Statistics

Purpose: Generate insights about collections, usage, and operations

Essential Capabilities:

  • Pre-built reports for common needs
  • Custom report builder with SQL access
  • Scheduled reports with automated delivery
  • Circulation statistics
  • Collection analysis
  • Patron statistics
  • Data export in multiple formats

Why It Matters: Data-driven decisions improve library operations, justify budgets, and demonstrate value to stakeholders.

Koha Advantage: Powerful SQL report builder, guided report wizard, scheduled reports, comprehensive data dictionary.

7. Patron Management

Purpose: Maintain patron records, permissions, and communication

Essential Capabilities:

  • Patron categories with customizable rules
  • Custom fields for local needs
  • Automated messaging (email, SMS)
  • Fine/fee management
  • Privacy controls (GDPR compliance)
  • Patron import/export
  • Photo storage

Why It Matters: Effective patron management enhances service quality, improves communication, and supports library policies.

Koha Advantage: Highly flexible patron categories, automated notices, privacy modes, patron attribute customization.

Bonus Features That Matter

While not always listed as “essential,” these features significantly enhance ILS functionality:

APIs and Integration

  • REST API for custom applications
  • Standard protocols (SIP2, NCIP)
  • Third-party system integration

Cloud Compatibility

  • Remote access capabilities
  • Scalable architecture
  • Regular backups and disaster recovery

Mobile Support

  • Responsive staff interface
  • Mobile OPAC
  • SMS notifications

Accessibility

  • Screen reader compatibility
  • Keyboard navigation
  • Adjustable fonts and colors

Evaluating an ILS

When assessing an integrated library system, consider:

  1. Feature completeness: Does it have all seven core modules?
  2. Ease of use: Is the interface intuitive for staff and patrons?
  3. Customization: Can you adapt it to your workflows?
  4. Integration: Does it work with your existing systems?
  5. Support: What support options are available?
  6. Cost: What’s the total cost of ownership?
  7. Community: Is there an active user community?

Why Koha Excels

Koha, as a mature open-source ILS, delivers all seven key features plus:

✅ No licensing fees - More budget for collections ✅ Active development - Regular updates and new features ✅ Global community - Thousands of libraries worldwide ✅ Standards compliance - Supports all major library standards ✅ Flexibility - Customize without vendor approval ✅ Ownership - Your data, your system

Getting Started

Ready to explore a full-featured integrated library system?

The Bottom Line: An ILS is only as good as its weakest module. Koha’s integrated approach ensures all seven key features work seamlessly together, providing a complete solution for libraries of all sizes.