Resource reviewed Juxta LERA Variance Viewer
Title Juxta Web Service LERA Variance Viewer

description of responsible personnel. Please indicate names as “forename surname”.

NINES, Performant Software, Gregor Middell, Ronald Dekker Marcus Pöckelmann Nico Balbach
URI http://juxtacommons.org/ http://lera.uzi.uni-halle.de/ http://variance-viewer.informatik.uni-wuerzburg.de/Variance-Viewer/
Publication Date

Format should
be either yyyy, yyyyff. or yyyy-yyyy, e.g. 2007 or 2007-2013

2009 2015 2018
Date of last access 20.12.2019 20.12.2019 20.12.2019
Surname Roeder
First Name Torsten
Organization Leopoldina
Place Halle (Saale), Germany
Email torsten.roeder (at) leopoldina.org
General information Juxta LERA Variance Viewer
Type of reviewed software

computational application to be used for accomplishing one task or a number of related
tasks in the process of digital scholarly editing; Virtual Research Environment (VRE): a
platform on which various tools (independent or not) are working as an integrated whole
in order to perform a series of tasks or to cover the entire workflow.

What type of software is it?
Tool Tool Tool

system, e.g. for stand-alone applications; web-browser for web-based applications,
web-services, and APIs; another application, i.e., a plugin

On which platform runs the tool?
Web-browser Web-browser Web-browser
For what purpose was the tool developed?
General purpose General purpose General purpose
Which is the financial model of the tool?
Free Free Free
What is the development stage of the tool?
Beta Release Release
Methods and implementation Juxta LERA Variance Viewer
Programming language(s)
Which programming languages and technologies are used?
Java, other Java, other Java, other
Does the tool reuse portions of other existing software?
yes yes yes
Input format
Which programming languages and technologies are used?
XML, XML-TEI, txt, PDF, HTML, other: doc, rtf, ePub XML, XML-TEI, txt, other: rtf XML, XML-TEI, txt
Output format
Which programming languages and technologies are used?
XML, XML-TEI, HTML, other: epub PDF, HTML, other: tex XML, XML-TEI, PDF, JSON
Which character encoding formats are supported?
unknown unknown unknown
Is a pre-processing conversion included?
yes yes yes
Does the documentation list dependencies on other software, libraries or
yes yes yes
Dependencies installation
If yes, is the software handling the installation of dependencies during the general
installation process (you don’t have to install them manually before the
no no no
Usability, sustainability and maintainability Juxta LERA Variance Viewer
Is documentation and/or a manual available? (tool website, wiki, blog, documentation,
or tutorial)
yes yes yes
Format of documentation
Which format has the documentation?
Sections of documentation
Which of the following sections does the documentation contain?
Getting-started (installation and configuration), Step-by-step instructions, Examples,
FAQ, Support section, API documentation
Examples Getting-started (installation and configuration), Step-by-step instructions,
Language of documentation
In what languages is the documentation available?
English English, German English
Active Support
Is there a method to get active support from the developer(s) or from the
yes yes yes
Type of support
Which form of support is offered?
other: e-mail other: e-mail other: e-mail
Bug/issue tracker
Is it possible to post bugs or issue using issue tracker mechanisms?
yes no yes
Build and install (personal learning curve)
Grade how straightforward it is to build or install the tool on a supported
Normal Normal Normal
Is there a test suite, covering the core functionality in order to check that the
tool has been correctly built or installed?
no no no
Deployment on platforms
On which platforms can the tool/software be deployed?
not applicable not applicable not applicable
Deployment on devices
On which devices can the tool/software be deployed?
not applicable not applicable not applicable
Deployment on browser
If the tool is web-based: On which browsers can the tool/software be deployed?
unknown unknown unknown
Browser plugin
If the tool is web-based: Does the tool rely on browser plugins?
no no no
Is there an API for the tool?
yes no no
Is the source code open?
yes no yes
Under what license is the tool released?
Apache not applicable GNU/GPL
Does the software make adequate acknowledgement and credit to the project
yes yes no
Registered in software repository
Is the tool/software registered in a software repository?
yes no yes
Contributing possible
If yes, can you contribute to the software development via the repository/development
yes not applicable yes
Code Analysability
Can the code be analyzed easily (is it structured, commented, following
unknown unknown unknown
Code Extensibility
Can the code be extended easily (because there are contribution mechanisms,
attribution for changes and backward compatibility)?
unknown unknown unknown
Code Reusability
Can the code be reused easily in other contexts (because there are appropriate
interfaces and/or a modular architecture)?
unknown unknown unknown
Information of security/privacy
Does the software provide sufficient information about the treatment of the data
entered by the users?
no no no
Is there information available whether the tool will be supported currently and in
the future?
no no no
Does the tool supply citation guidelines (e.g. using the Citation File Format)?
no no no
User interaction, GUI and visualization Juxta LERA Variance Viewer
User group
What kind of users are expected?
Researcher, Humanists Researcher, Humanists Researcher, Humanists
User interaction
What kind of user interactions are expected?
Reading, Text editing, Text analysis, Searching, Visualization, Comparing Reading, Text editing, Text analysis, Searching, Visualization, Comparing Reading, Text editing, Text analysis, Searching, Visualization, Comparing
User Interface
What kind of interface does the tool provide?
Graphical User Interface, API Graphical User Interface Graphical User Interface
Does the tool provide a particular visualizations (in terms of analysis) of the input
and/or the output data?
yes yes yes
User Empowerment
Is the user allowed to customize the functioning of the tool and the output
yes yes yes
Does the tool provide particular features for improving accessibility, allowing
„people with the widest range of characteristics and capabilities” to use it?
no no no



Published: Jan 2020