Reference Manager Comparison

KaleidoGlobeKaleidoGlobe
Price
Free
For 1 GB storage and 60 compute minutes per day (for NLP tasks)
Free for 300 MB storage
Annual subscription:
$55/year: 5 GB
$110/year: 10 GB
$165/year: unlimited storage
Free for 300 MB storage
Annual subscription:
$20/year: 2 GB
$60/year: 6 gb
$120/year: unlimited storage
Free (Endnote basic)
Maximum 50,000 references and up to
2GB attachments total
One time payment: $249.95
Student: $115.95
Upgrade: $99.95 (X9 or earlier)
30-day free trial
Contact sales for quote (organization level license)
30-day free trial
Monthly subscription:
Student: $3/month
Academic: $5/month
Corporate: $10/month
7-day free trial
Monthly subscription:
Academic: $2.99/month
Corporate: $9.99/month
$249 for individual academic license
Free, open-source
For 2 GB of storage
UI design & customization

Clean, minimalist design

UI responsive to screen size and resolution

Two document browser UI templates

Can show/hide sidebars and tabs

iTunes-like aesthetic

Resizable sidebars

Can manually adjust UI font size

Resizable sidebars

Adjustable font size

iTunes-like aesthetic

Resizable sidebars and moveable panels

Adjustable font size

Not customizable

Clean, minimalist design

UI is responsive to screen size and resolution

Not customizable

App downloaded as Chrome extension

3 predefined UI templates to choose from

Not customizable

Metadata management
Extracts and validates metadata on upload
Imports missing metadata from CrossRef where applicable
Edit metadata through an Excel-like grid
Add new metadata fields
Show/hide/rearrange existing metadata fields
Autopopulate metadata based on user defined rules over full-text
Pivot table analysis
Extracts metadata on upload
Searches for metadata externally on request
Manual metadata management via classic form interface
Extracts metadata on upload
Searches for metadata externally on request
Manual metadata management via classic form interface
Extracts metadata on upload
Find full-text from reference entries (if user has license)
Imports missing metadata automatically
Manual metadata management via classic form interface
Extracts metadata on upload
Imports missing metadata automatically
Manual metadata management via classic form interface
Extracts metadata on upload
Imports missing metadata automatically
Manual metadata management via classic form interface
Extracts metadata on upload
Imports missing metadata automatically
Manual metadata management via classic form interface
Extracts metadata on upload
Imports missing metadata automatically
Manual metadata management via classic form interface

Manual metadata management via classic form interface

PDF viewer

PDF previewer in preview tab

Built-in PDF viewer

PDF preview available in library

PDF view in full screen within Mendeley

Built-in PDF viewer available in Zotero 6

PDF previewer in preview tab

Built-in PDF viewer

PDF previewer in preview tab

Built-in PDF viewer

PDF previewer in preview tab

Built-in PDF viewer

Built-in PDF viewer

PDF previewer in preview tab

Built-in PDF viewer

PDF previewer in preview tab

Built-in PDF viewer

Import and upload
No download required; always synchronized
Full-text upload
Automatic metadata extraction and validation
Supports manual BibTeX import
Requires desktop app for most use cases
Sync user's local library to the cloud
Requires desktop app for most use cases
Sync user's local library to the cloud
Requires desktop app for most use cases
Sync user's local library to the cloud
No download required; always synchronized
Supports direct full-text upload
Supports manual BibTeX import
No download required; always synchronized
Supports direct full-text upload
Automatic metadata extraction and validation
Supports manual BibTeX import
No download required; always synchronized
Supports direct full-text upload
Automatic metadata extraction and validation
Supports manual BibTeX import
Requires desktop app for most use cases
Sync user's local library to the cloud
Requires desktop app for most use cases
Sync user's local library to the cloud
Export and download

Download single files or entire projects

Export as BibTeX (.bib)

Full-texts already stored locally (app installed locally)

Export as BibTeX (.bib), RIS (.ris), EndNote XML, Zotero (zotero.sqlite)

Full-texts already stored locally (app installed locally)

Export as BibTeX (.bib), RIS (.ris), etc. (among 20+ formats)

Full-texts already stored locally (app installed locally)

Export as BibTeX (.bib), RIS (.ris), etc. (among others)

Download single files or entire projects

Export as BibTeX (.bib), RIS (.ris), etc. (among many others)

Download single files or entire projects

Export as BibTeX (.bib), RIS (.ris), etc. (among many others)

Download single files or entire projects

Export as BibTeX (.bib), RIS (.ris), etc. (among many others)

Full-texts already stored locally (app installed locally)

Export as BibTeX (.bib), RIS (.ris), etc. (among others)

Full-texts already stored locally (app installed locally)

Export as BibTeX (.bib), RIS (.ris), etc. (among others)

Search
Full-text search (incl. OCR text)
Metadata search
In-document lookup
Customization of search scope (organization-wide vs. project specific)
(Coming soon) Integrated search across public platforms (i.e. Google Scholar, PubMed, ArXiv)
Metadata search
Search with boolean operators
In-document lookup
Full-text search
Metadata search
Search with boolean operators
In-document lookup
Full-text search
Metadata search
Search with boolean operators
In-document lookup
Searches across partnered publisher databases
Metadata search
Search with boolean operators
Full-text search
Metadata search
Search with boolean operators
In-document lookup
Metadata search
Searches across Google Scholar, PubMed or ArXiv
Combines references from different sources; integrates with dbs
Metadata search
Search with boolean operators
Limited support for Regex
Full-text search
Metadata search
Search with boolean operators
In-document lookup
Sort and filter
Yes

For all metadata fields

Limited

Sort only

Limited

Sort only

Limited

Sort only

Limited

Sort only

Limited

Sort only

Limited

Sort only

Limited

Sort only

Limited

Sort only

Annotation
Highlight/text quote
Rectangular snippet with OCR
Add description / key insight
Comment thread on annotation
Browse annotations in single document or across multiple documents simultaneously
Jump to annotation in full-text
Sort, filter, search
Share externally via direct link
(with option to include rich metadata)
Highlight/text quote
Rectangular snippet
Sticky note
Jump to annotation in full-text
Requires manual synchronization of all locally-created annotations
No annotation search
Highlight/text quote
Rectangular snippet
Sticky note
Jump to annotation in full-text
Search annotations
Automatic synchronization of locally-created annotations
Option to embed annotations into source PDF for export
Highlight/text quote
Rectangular snippet
Sticky note
Strike-through
Text description/comment
Highlight/text quote
Sticky note
Text description/comment
Highlight/text quote
Freehand
Underline
Strike-through
Text description/comment
Highlight/text quote
Sticky note
Text description/comment
Generate summary from annotations and comments
Annotations synched to Google suite
Highlight/text quote
(colors have predefined purpose)
Highlight/text quote
Rectangular snippet with OCR
Add additional metadata to annotations
Generate summary from annotations
Tags

Autosuggest tags

Can search and filter by tags

Can automatically add tags based on user defined rules over full-text

Manual tags

Autosuggest tags

Can search and filter by tags

Manual tags

Manual tags

Manual tags

Manual tags

Manual tags

Predefined purpose for colors

Manual tags

Deduplication

Checks for duplicate documents on upload

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Checks for duplicate documents on upload

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Compares metadata and merges duplicate entries on request

Folder structure

References are organized by Project

Flat structure within each Project

Tags are used to label references in place of hierarchical folders

Classic hierarchical folders

Private cross-folder collections

Classic hierarchical folders

Private cross-folder collections

Classic hierarchical folders

Classic hierarchical folders

Private cross-folder collections

Classic hierarchical folders

Private cross-folder collections

Classic hierarchical folders

Private cross-folder collections

Classic hierarchical folders

Private cross-folder collections

Classic hierarchical folders

Private cross-folder collections

File format supported

Integrates with built-in document viewer and OCR: BibTeX, PDFs, .pptx, .docx, HTML, images (.jpg, .png)

As static attachments: all file types

Text documents (pdf, txt, odt, doc, rtf)

Markup lang (xml, sgml, html, css, xslt, js, es)

Spreadsheets (ods, csv, xls, pdf, docx)

Databases (sql, siard, csv, mdb, dbf, hrf5)

Statistical data (xml, por, sav, dta, 7bdat)

Images (tiff, jpg, png, ai, eps, svg, dcm)

pdf, html, images (jpg, png)

Basic: 4 supported formats

Premium: 500+ supported formats.

Audio files (wav, mp3)

Video (mov)

Microsoft Access, Excel, PowerPoint, Word, Project, Visio

Text: PDF, txt, rtf, HTML

Technical Drawing files (AutoCAD)

Text formats

Zip formats

Image formats

Presentation formats

Markup formats

.csv, .bib, .ris; PDF, RIS, BibTeX and other common file types can be imported.

BibTeX, RIS, PDF, NBIB, EndNote files

BibTeX, PDFs, pptx, docx, html, images (jpg, png)

BibTeX, PDFs, pptx, docx, html, images (jpg, png)

Direct search of databases

Cannot search within publisher databases

Developing integrations with publicly available paper databases

Integrations with numerous publisher databases; license required for direct search

Your school may already have licenses to some of these databases

Integrations with public databases including Library of Congress and WorldCat for ISBNs, CrossRef for DOIs, NCBI PubMed for PubMed IDs, and }arXiv.org for arXiv IDs

Integrations with numerous publisher databases; license required for direct search

Your school may already have licenses to some of these databases

Integrations with numerous publisher databases; license required for direct search

Your school may already have licenses to some of these databases

Integrations with numerous publisher databases; license required for direct search

Your school may already have licenses to some of these databases

Integrations with numerous publisher databases; license required for direct search

Your school may already have licenses to some of these databases

Integrations with numerous publisher databases; license required for direct search

Your school may already have licenses to some of these databases

Cannot search within publisher databases

Citation styles

9,000+ citation styles supported

9,000+ citation styles supported

8,100+ citation styles supported

Top 21 most commonly used styles (basic)

4,200+ citation styles supported (premium)

6,000+ citation styles supported

10,000+ citation styles supported

8,000+ citation styles supported

10,000+ citation styles supported

8,000+ citation styles supported

Sync across multiple users
Yes

Through private organization account

Limited

Through public and private groups

Full-text not available for sharing

Limited

Through public and private groups

Full-text not available for sharing

Yes

Through private groups

Limited

Through public and private groups

Yes

Limited number of shared collections

Yes

Through Google Drive

Yes
Yes
Sync across multiple devices
Yes
Limited

Certain functions like annotations require explicit manual input to synchronize

Yes
Yes
Yes
Yes
Yes
Yes

For Citavi Web users (released Jun 2021)

Yes
Offline access
No
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Access control & permissions
Can set as admin or regular member within organization account
More granular access controls in the works
Can set as admin or regular member within group
Can set as admin or regular member within group
Can set as admin or regular member within group
Can set as admin or regular member within group
Can set as admin or regular member within group
Can set as admin or regular member within group
Granular access permission roles (Owner, Project Leader, Author, Reader)
Granular access permission roles (Admin, Contributor, Viewer)
Shared comments
Yes

Within private organization account

Can export annotation with comments to be shared publicly

Limited

Within a small private group

No
Limited

Only available with organizations holding 20+ licenses

Yes

For the web version

Not available on the Refworks legacy version

Yes

For the web version

Not available on the Refworks legacy version

Limited

shared comments only supported in certain collections

Yes
Yes

Within Group library

Browser extension
Yes
Chrome (5.0)

Can capture and save PDF articles to app directly from browser

Currently supports Google Chrome only

Yes
Chrome (3.1)

Can capture snapshots and archive webpages.

Cannot automatically capture citation information.

Yes
Chrome (4.0)
Edge (4.5)

Can capture and save articles to app directly from browser

Supports Chrome, Firefox, Safari, and Edge

Yes
Chrome (4.5)

Can capture and save articles to app directly from browser

Supports Chrome, Firefox, Safari, and Edge

Yes
Any modern browsers (imports metadata only, no full-text)

Can capture and save articles to app directly from browser

Supports Chrome and Safari

Yes
Chrome (4.3)
Firefox (4.6)
Edge (3.5)

Can capture and save articles to app directly from browser

Supports Chrome, Firefox, Safari, and Edge

Yes
Chrome (4.8)

Can capture and save articles to app directly from browser

Supports Chrome and Safari

Yes
Chrome (4.0)

Can capture and save articles to app directly from browser

Supports Chrome and Safari

No
MS Word integration
Coming soon

(Jan 2022)

Yes
(1.4)

From the Office store

Yes

Automatically installed with Zotero desktop

Yes

Download from Clarivate website

Yes
(1.7)

From the Office store

Yes
(2.3)

From the Office store

No
Yes

Download from Citavi website

Yes

Download from Qiqqa website

Google Docs integration
No
No
No
Limited

Requires manual insertion of reference list

Yes
(2.4)

From Google Workspace Marketplace

No
Yes
Chrome (3.8)

From Google Workspace Marketplace

No
No
Windows
Yes
Yes

Windows 7 - 10

Yes
Yes
Yes
Yes
Yes
Yes
Yes
macOS
Yes
Yes

macOS 10.10 - 10.14

Yes
Yes
Yes
Yes
Yes
No
No
Linux
Yes
Yes

Debian Stretch & Ubuntu 16 - 17

Yes
Yes
No
No
Yes
No
No
Android
No
Withdrawn

Withdrawn 3/2021; supported through Papership

Withdrawn

Withdrawn 3/2021; supported through Aziz, Lite!

No
No
Yes
Yes
No
No
iOS
No
Withdrawn

Withdrawn 3/2021; supported through Papership

Withdrawn

Withdrawn 3/2021; supported through Papership

Yes
No
Yes
Yes
No
No
Support & customer service
Online support via email
Tutorial document included on sign-up
Tutorial articles on blog in the future
Live chat support in development
Online support via email
Online support portal (support ticket system)
Tutorial articles on blog
Online support via email
Online support via email
Online support portal (support ticket system)
Customer support by phone
Tutorial articles on blog
Online support via email
Online support portal (support ticket system)
Customer support by phone
Tutorial articles on blog
Online support via email
Tutorial articles on blog
Online support via email
Tutorial articles on blog
Online support via email
Tutorial articles on blog
Tutorial articles on blog