This deliverable describes the achievements of the last year of the Joint Research Activities (JRAs for short) of the ARIADNEplus project, with a special emphasis on the Knowledge discovery and browsing service, implemented by the ARIADNE Portal with the support of the ARIADNE Aggregation Infrastructure. The report provides an integrated overview of all the scientific and technological developments that have taken place in JRA Work Packages during the above mentioned period. These Work Packages are: WP12 JRA1 - Data Integration and Interoperability (Lead beneficiary CNR) WP13 JRA2 - ARIADNEplus Infrastructure Operation and Management (Lead beneficiary CNR) WP14 JRA3 - The ARIADNEplus knowledge management system (Lead beneficiary FORTH) WP15 JRA4 - Innovative Services for Users (Lead beneficiary SND) WP16 JRA5 - Innovative Methods and Pilots (Lead beneficiary INRAP) This deliverable corresponds to the activities of tasks 12.5 (Knowledge discovery and browsing) and 12.6 (Monitoring JRA activities). The document consists of one main Section (Section 3) which provides an overview of the progress in the JRA WPs covering four main fronts: Infrastructure and Virtual Research Environments setup and operation Aggregation infrastructure The ARIADNE Content Cloud Services and pilots. A separate Section (Section 4) is devoted to the Knowledge discovery and browsing service. Sections 5 to 9 are devoted to the JRA WPs, from WP12 to WP16, in the order. Each WP Section has the same structure: 1. Goal of the WP 2. Planned schedule of activities (table) 3. Results obtained from Month 37 to Month 48 (bulleted list) 4. Problems encountered and open issues, if any. No milestone was set in the fourth year of the project for the JRAs.