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Delta Document Management System

December 21, 2018

Delta Document Management System

Delta document management system is a web-based Alfresco application that allows the organization to manage document-related work. In Delta, you can monitor, assign and manage tasks, and act as a substitute. Users have rights-based access to the entire organization’s documentation. The system of rights can be flexibly configured for both internal and external needs. There are about 20 thousand users in Delta.

Functionality:
– list of documents;
– registration of documents;
– task management;
– processing of cases;
– digital signing with ID-card and Mobile-ID;
– mDelta, or working with a smart device;
– functionality of a substitute;
– searches, reports;
– user rights system;
– Public Register of Documents (ADR).

Works done:
– business and system analysis;
– upgrading of specifications and user manuals;
– Data migration from other document management systems (GoPro, Dora);
– analysis of integrations;
– testing;
– project management.

Technologies used: Alfresco ECM, Java, Spring, X-Road, ID Card, Mobile-ID, Javascript, PostgresSQL, Spring MVC, Bitbucket, Digidoc4J, HTML / CSS, X-Road, DigiDocService, UAM (Universal Archiving Module), CAS, SOAP, LDAP, CentOS, Tomcat, Nginx, XML

Integrations: X-Road, National Document Exchange Center (DVK), Certification Authority (SK), Active Directory (AD), Outlook, Office Software (MS Office, OpenOffice), National Archive Information System.

Latest Projects

Tallinna Linnatransport – Renewal of the Intranet and Public Website

Tallinna Linnatransport – Renewal of the Intranet and Public Website

August 19, 2025

Challenge
Tallinna Linnatransport (TLT) needed a complete overhaul of both its intranet and public website. The new solution had to be user-friendly, secure, accessible, and meet the needs of diverse target groups – from citizens to employees and business partners.

Solution
Krabu Grupp carried out a comprehensive renewal project which included:
• creating a new design framework in line with TLT’s brand guidelines;
• developing a user-centered Mega Menu and personalized homepage views for different user groups;
• adding modern features such as ID-card, Mobile-ID and Smart-ID login, dark mode, and dynamic submenus;
• ensuring mobile-friendly responsive design and multilingual support (Estonian, English, Russian);
• implementing accessibility improvements in line with international standards;
• optimizing site performance (lazy loading, CSS/JS minification, caching, server-side rendering) and strengthening security with a multi-layered protection system.

Result
The renewed website provides TLT with:
• significantly improved user experience across all devices,
• smooth and fast navigation through the Mega Menu and personalized views,
• secure and reliable access to internal information,
• better visibility in search engines thanks to technical optimization.

With the new solution, TLT can offer employees, customers, and partners a clear, trustworthy, and convenient digital channel that supports daily operations and strategic goals.

Moodle Platform Customization

Moodle Platform Customization

April 29, 2025

Challenge
A rapidly-growing private-sector company needed a simple, auditable way to prove that every employee had read and acknowledged mandatory internal documents.

Solution
Krabu Grupp extended the customer’s Moodle learning environment with a custom Document Sign-Off plugin. Once an employee finishes reading, they set the status to Done; the system instantly stores the user, timestamp and document version and feeds the data into a real-time compliance report.

What is Moodle?
Moodle is an open-source Learning Management System (LMS) used in more than 200 countries to build e-learning courses, manage content and track learner progress.

Impact
• 100 % visibility of employee acknowledgements
• Sign-off cycle shortened from days to minutes
• Automatic audit trail exports for HR and compliance teams