Helpful online forums for connecting with other UPSC aspirants include platforms like Quora, Reddit, and specific WhatsApp groups dedicated to UPSC preparation. Websites like Mrunal, ClearIAS, and ForumIAS offer a wealth of resources along with a community of aspirants where they can ask questions and share study materials. Engaging in discussions on these forums can provide diverse perspectives and insights into preparation strategies, exam experiences, and current affairs, ultimately enriching the learning process for all members involved.