THE AI TOOL DIRECTORY

AI Research Tools

AI tools for deep research, answer synthesis, and cited information discovery.

4 tools

HowNormalAmI

HowNormalAmI is a free interactive documentary and art project by Dutch artist Tijmen Schep (EU SHERPA/Horizon 2020) that lets visitors experience how face-analysis algorithms judge appearance — beauty, age, gender, emotion, BMI, and life-expectancy scores — with all models running in the visitor's own browser.

AI Research Tools View Tool

HotBot

HotBot is a web-based AI chat platform by Hotbot Services LLC that aggregates access to 644 AI models under one interface — switch between models at any time, upload files, and use voice input. A free tier with daily limits is available; paid plans raise the limits.

AI Research Tools View Tool

Aithor

Aithor is an AI writing platform with an essay writer, AI humanizer, detector, paraphraser, and citation tools. It offers a free plan alongside paid tiers, via the web and API.

Writing View Tool

Perplexity

Perplexity is an AI-powered answer engine delivering cited answers from trusted web sources. It offers a free plan and paid tiers with top AI models, deep research, and file uploads across web, desktop, and mobile.

AI Research Tools View Tool