WolframAlpha

Launched May 2009, predating the current generative-AI wave; included here because it's a genuinely distinct "AI-adjacent research tool" category member (computes rather than generates) and partnered with DuckDuckGo on API/search integration as early as 2011. Has a public API. The Research subcategory is thin beyond this entry — most AI research labs (OpenAI, DeepMind, Anthropic) are already catalogued under their consumer products (ChatGPT, Gemini, Claude) rather than as separate research-arm entries, so not double-counting them here.