HarvestHub is a web-based agricultural trading platform developed to address persistent challenges faced by farmers and institutional buyers in agriculture-dependent communities. The system is designed to directly connect farmers with buyers such as restaurants, food vendors, and local government units, thereby reducing reliance on intermediaries and improving market access, price transparency, and supply chain efficiency. Its primary objective is to provide a secure, reliable, and efficient digital environment that supports real-time transactions, protected data handling, and structured product listings tailored to agricultural commerce. The study employed an experimental research design using survey questionnaires to evaluate the system's performance. The respondents consisted of selected farmers and buyers who utilized the system prototype. The evaluation instrument was based on ISO 9126 software quality standards, focusing on Functionality, Reliability, Usability, and Efficiency. Results indicate a high level of user satisfaction, with weighted mean ratings ranging from 4.60 to 4.74 out of 5.0, verbally interpreted as Strongly Agree. These findings confirm that HarvestHub effectively meets the needs of its intended users and demonstrates strong potential as a digital solution for improving agricultural trade and stakeholder connectivity.