✓
Tool
Category
Pricing
Free?
Updated
Jenni AI
AI Research
Freemium
✓
Mar 2026
→
AI writing assistant for academic papers with autocomplete and in-text citations.
Best for: writing
ChatGPT ✓
AI Writing
Freemium
✓
Mar 2026
→
OpenAI's conversational AI assistant for writing, coding, analysis, and creative tasks.
Best for: chatbot
AskYourPDF
AI Research
Freemium
✓
Mar 2026
→
AI PDF assistant with ChatGPT plugin integration and batch document processing.
Best for: PDF
Claude ✓
AI Writing
Freemium
✓
Mar 2026
→
Anthropic's AI assistant for analysis, writing, and coding with 200K context.
Best for: ai-assistant
Google Gemini ✓
AI Productivity
Freemium
✓
Mar 2026
→
Google's AI assistant with Workspace integration and multimodal capabilities.
Best for: productivity
ChatDoc
AI Research
Freemium
✓
Mar 2026
→
AI file reading assistant with OCR, table understanding, and multi-format support.
Best for: PDF
Microsoft Copilot ✓
AI Productivity
Freemium
✓
Mar 2026
→
AI assistant across Office 365 for documents, presentations, and email.
Best for: productivity
Shortwave
AI Productivity
Freemium
✓
Mar 2026
→
AI email client for Gmail with thread summaries and smart bundling.
Best for: productivity
Gemini 3.1 Pro ✓
AI Writing
Freemium
✓
Mar 2026
→
Google's benchmark-leading AI with 77.1% ARC-AGI-2 score and multimodal capabilities.
Best for: ai-assistant
SciSpace ✓
AI Research
Freemium
✓
Mar 2026
→
AI copilot for understanding research papers with explanations and literature review tools.
Best for: research
Humata AI ✓
AI Research
Freemium
✓
Mar 2026
→
AI chat for PDFs that answers questions with page references and summarizes documents.
Best for: PDF
PDF.ai
AI Research
Freemium
✓
Mar 2026
→
AI PDF tool for chatting, data extraction, and summarization with source highlights.
Best for: PDF
Explainpaper
AI Research
Freemium
✓
Mar 2026
→
AI that explains confusing research paper text in plain language when you highlight it.
Best for: research
Perplexity AI ✓
AI Productivity
Freemium
✓
Mar 2026
→
AI search engine with cited sources, multi-step reasoning, and real-time web access.
Best for: search
Lateral
AI Research
Freemium
✓
Mar 2026
→
AI document analysis tool for finding themes and comparing concepts across research sources.
Best for: document-analysis
Obsidian ✓
AI Productivity
Freemium
✓
Mar 2026
→
Local-first knowledge base with AI plugins for second brain building
Best for: note-taking
Mode Analytics
AI Data Analysis
Freemium
✓
Mar 2026
→
Collaborative analytics with SQL, Python, R, and interactive business reports.
Best for: data-analysis