Plenty of tools today. Very few that can say who pays.

OpenRouter for voice AI, aggregating multiple voice services with a unified interface. Active community discussion indicates strong demand for voice AI infrastructure.

Free local AI code reviewer, replacing paid services and protecting code privacy. Open source and active, worth watching.

AI watchdog that prevents Claude from deleting your database, adding safety guardrails for AI agents. A practical tool in agent security.

Multiple products like Cumora, Shepherd Terminal are focusing on multi-agent collaboration and terminal management, showing AI agents moving from single-point tools to team collaboration.

According to AI product growth rankings, MaxAI.me grew +13311% MoM, and Shangtang Xiaohuanxiong +3479%, but specific reasons are unclear and need further observation.