This is a summary of the text about Symbl.ai's participation in the TADHack hackathon, which took place in 2021. Symbl.ai sponsored the event and provided APIs and SDKs for developers to use. The results were impressive, with 21 hacks built over one weekend by developers from around the world. The hacks showcased various applications of Symbl.ai's technology, including automatic speech recognition, sentiment analysis, and real-time transcription. Many of the hacks were designed to address challenges in online learning, such as student cheating and lack of monitoring during online exams. The event also featured hacks for podcast annotation, virtual assistants, and search and rescue operations. The success of these hacks demonstrates Symbl.ai's ability to democratize conversation intelligence and make it accessible to developers worldwide.