The speaker, Jean-Pierre Trot, who is a maintainer of Prometheus, discussed the Prometheus toolkit, which is a collection of open-source tools designed to enhance the Prometheus monitoring stack. The toolkit includes various command-line and browser-based tools that aim to address specific needs not covered by Prometheus itself. Some of the tools mentioned include CSV to Targets, which simplifies the process of adding and updating monitoring targets in Prometheus using CSV files; Only Expose, which exposes metrics from text files for Prometheus to consume securely; and All Script Jitter, which helps identify and address alignment issues with timestamps in Prometheus data storage. The speaker also mentioned that the toolkit is available for download on GitHub and other platforms, and that more tools may be added in the future based on user needs and feedback.