Unriddle — now Anara AI — is a free AI research assistant trusted by 3 million users at Stanford and MIT, offering document Q&A, contextual note linking, AI writing, and graph-view research visualization.
Cebra is a free open-source machine learning tool for joint behavioral and neural time series analysis, using learnable latent embeddings to decode complex neural dynamics from calcium and electrophysiology data.
Recapext is a free open-source Chrome extension that uses ChatGPT to summarize any portion of any webpage, helping researchers and students extract key information faster.
StreamAlive turns Zoom, Teams, and YouTube Live chat into real-time polls, word clouds, and maps — no QR codes or second screens. Free up to 10 commenters, paid from $20/month.
BrainyPDF is a free AI PDF tool that lets you ask questions, get cited answers, and summarize documents in multiple languages — supporting PDFs, DOCX, and TXT files instantly.
BerriAI LiteLLM is a free Python SDK and proxy server that routes calls to 100+ LLMs including Claude, GPT-4, Gemini, and Bedrock through a single OpenAI-compatible interface.
Paperpal is an AI academic writing tool trained on peer-reviewed research to help students and researchers write, edit, and submit manuscripts with confidence.
PDF.ai is an AI-powered PDF tool that lets you chat with documents, extract data, summarize content, and build embeddable PDF chatbots via API for websites and custom applications.
ChartPixel is an AI-powered data visualization tool that generates interactive charts, statistical insights, and annotations from CSV or Excel uploads without any coding required.
Recall is a free AI knowledge base that summarizes articles, YouTube videos, podcasts, and PDFs, then organizes everything into a self-connecting knowledge graph you can chat with.
TLDR This is a free AI text summarizer that condenses articles, PDFs, and web pages into key-point summaries — browser extensions available, paid Starter plan from $4/month.
iAsk.AI is a free AI search engine trained on authoritative sources that delivers instant, unbiased factual answers — Pro plan at $9.95/month adds document analysis and image generation.