DEADLINE EXTENDED! Please see additional attached document in the section Documents concerning amendment to page 13 of the Request for Proposal. (Changes highlighted in yellow in the file:  Request_for_Proposal_final_page_13_UPDATED.pdf)  Description: Digital services in relation to TWAS web platforms [Budget/Amount]:  Between $15,000 and $65,000 a year over a 4 years period. United Nations Educational, Science and Cultural Organization (UNESCO) hereby invite qualified companies to submit sealed tenders as follows: TWAS and OWSD need a wide array of consulting services for their websites in Drupal and for the online-forms platform in Laravel to ensure security maintenance, assistance with emerging technical issues, as well as basic and advanced enhancements such as undertaking larger projects requiring development of new modules to be added to the existing platforms or new stand-alone web applications. The purpose of this notice is to provide general information on the requirements for the procurement process and to inform interested suppliers how to obtain a copy of the Solicitation Documents. Interested companies who wish to participate in the OIC must request for a complete set of Solicitation Documents, available free of charge, from UNESCO contact person at the address shown below. The sealed tenders must be delivered to the UNESCO-TWAS on or before 22 September 2025 (previously 15 September) at 11:00 AM (Rome time) in strict compliance with the instructions as stipulated in the Solicitation Documents. UNESCO reserves the right to amend the documents at any time during the solicitation process. Any amendments or clarifications will be communicated directly to all Bidders who have requested for a complete set of solicitation documents and officially confirmed their intention to submit a sealed tender. No remuneration will be made to companies for preparation and submission of their tenders. UNESCO Contact Information: UNESCO-TWAS Attn: Mr. Antonino Coppola – Operations Office E-mail: [email protected]