Solar distillation methods have been developed since ancient times and continue to evolve with ongoing researchefforts.Among recent advancements, the tubular solar still (TSS) has emerged as a promising technology; however, it remainsinthedevelopmental stage. The present study focuses on enhancing the productivity of the TSS by integrating auxiliary solar collectorsto increase the rate of water evaporation and, consequently, freshwater yield. The key novelty of this work lies inthefirst-timeexperimental coupling and comparative evaluation of three different solar collectors with a TSS configuration: Case-1(TSS+parabolic trough collector), Case-2 (TSS + evacuated tube collector), and Case-3 (TSS + compound parabolic concentrator). Theperformance of these modified systems was experimentally compared with that of a conventional baseline TSS. All experimentswere conducted under identical outdoor conditions with the systems arranged side by side in Nagpur, India (21.135°N, 79.0033°E).The results demonstrate that the Case-3 configuration (TSS + CPC) achieved the highest enhancement, withproductivityincreasing by approximately 2.2 times compared to the conventional TSS. Furthermore, the economic analysis indicatesthattheTSS–CPC system represents the most cost-effective solution among the investigated configurations. Keywords: Tubular solar still, Evacuated tube collector, Parabolic trough collector, Compound parabolic collector