Usage Stats Made Easy

We help librarians turn e-resource usage data into informed collection development decisions.
CELUS at its finest
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No credit card. No commitment.
  • Automated harvesting
  • COUNTER + 200 non-COUNTER formats
  • Report templates, powerful analytics
  • Hands-on setup help from our team

Trusted by leading institutions worldwide

Features

Everything you need to manage library usage statistics

CELUS collects your COUNTER and non-COUNTER usage data in one place, so you can report, analyze and make collection decisions without wrestling with spreadsheets.

Collect your data

  • Automated data harvesting via SUSHI
  • Simple SUSHI credential management
  • Manual uploads of historical usage data
  • Processing of custom non-COUNTER reports
See supported non-COUNTER platforms

Report with confidence

  • Advanced reporting and exports
  • COUNTER 5.1, 5 and 4 support
  • Ready-made report templates
  • ACRL IPEDS report in one click
Get your ACRL IPEDS report

Analyze and decide

  • Fast, powerful data analytics
  • Cost-per-use analysis
  • Identification of overlapping subscriptions
  • Year-to-year usage comparison
Browse the Knowledge Base

Go further with Data Hub

  • Access your CELUS data in your BI tools
  • Combine usage with financial data
  • Create executive dashboards
  • Automate internal reporting pipelines
Explore CELUS Data Hub

Onboarding and support

You don't have to set it up alone

Getting usage data flowing is the hard part, so we do it with you. Our team works directly with your library from day one, and we're still here after.

We set up your account

We create your organization, add your platforms and show your team around, so you start with a working setup instead of a blank screen.

We get SUSHI working

Credentials that won't connect or reports that come back empty? We test them with you, track down the cause and tell you exactly what to ask your provider.

We upload your history

Send us your older COUNTER and non-COUNTER files and we'll bulk upload them for you. Years of data, no spreadsheet marathon.

We help with reporting

A report for your director, an IPEDS submission or a renewal decision? We'll help you build it and show you how to reuse it next time.

Testimonials

What our users say

Librarians and consortia around the world use CELUS to save time and make better-informed collection decisions.

“When I heard about CELUS for libraries, I recognized right away the goldmine! This was the equivalent of at least 3 different software solutions.”
CELUS user, Judge, 2026 MLA Awards
“We are pleased that we partnered with CELUS, and now we finally have a sustainable solution for harvesting, uploading, and reporting electronic resources usage data.”
Rachel Erb, Director of E-Resources, Florida Virtual Campus
“CELUS has been consistently adding useful features, without the product becoming overly complex to use. Support has been outstanding. Thank you!”
Lauren Marshall, Collections Analyst, John Carroll University

Partners

Built with and for the library community

CELUS started with a national library consortium and keeps close ties with the organizations that shape how libraries measure usage.

COUNTER Technical Advisory Group

As a member of the COUNTER Technical Advisory Group, CELUS always stays up to date with the current COUNTER formats.

About CELUS and COUNTER

ConsortiaManager

CELUS integrates with ConsortiaManager, so you can combine prices with usage data for in-depth cost-per-use analysis.

About our partnership

CzechELib

CELUS was developed with CzechELib, the Czech national consortium of academic libraries, with around 130 member institutions and an annual e-resources budget of $35M.

How CELUS started

Pricing

One annual price, based on your platforms

Transparent, affordable pricing that also supports CELUS development and maintenance. Your annual price depends on the number of publisher platforms you manage (COUNTER and non-COUNTER).

Publisher platforms
CELUS
EUR / year
CELUS + Data Hub
+20%
Optional add-on for advanced analytics. Not required to use CELUS. Learn more
1 – 25
€2,000
€2,400
26 – 50
€2,500
€3,000
51 – 75
€3,000
€3,600
76 – 100
€3,500
€4,200
101 – 150
€4,000
€4,800
151 – 200
€5,000
€6,000
Publisher platforms
CELUS
USD / year
CELUS + Data Hub
+20%
Optional add-on for advanced analytics. Not required to use CELUS. Learn more
1 – 25
$2,300
$2,760
26 – 50
$2,900
$3,480
51 – 75
$3,500
$4,200
76 – 100
$4,100
$4,920
101 – 150
$4,700
$5,640
151 – 200
$5,800
$6,960

Explore CELUS with a 42-day free, non-binding trial. No credit card needed.

start free trial
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Good to know

Frequently asked questions

What is CELUS?

CELUS is an online platform that helps libraries and consortia harvest, clean and analyze e-resource usage statistics. It collects COUNTER reports automatically via SUSHI and also processes non-COUNTER data, so all your usage data is in one place.

Do I have to set everything up myself?

No. We set up your account with you, get your SUSHI credentials working, bulk upload your historical usage data and help you build your first reports. After that, our support team is one email away.

Which COUNTER versions does CELUS support?

CELUS supports COUNTER 5.1, 5 and 4 and harvests the reports automatically through SUSHI.

Can CELUS process non-COUNTER reports?

Yes. Besides COUNTER, CELUS processes more than 200 non-COUNTER formats, so you can compare usage across your whole portfolio.

How much does CELUS cost?

Your annual price depends on the number of publisher platforms you manage, both COUNTER and non-COUNTER. See the pricing table above.

Can I try CELUS for free?

Yes. You can explore CELUS with a 42-day free, non-binding trial. No credit card needed.

Who develops CELUS?

CELUS is developed by Big Dig Data s.r.o., a Czech company. It started in 2018 as a project for CzechELib, the Czech national consortium of academic libraries.