1. ChatGPT (free) — Best general assistant for writing and Q&A.
2. Claude.ai — Excellent for long documents and analysis.
3. Google Gemini — Great for Google Workspace integration.
4. Perplexity AI — AI-powered search with source citations.
5. GitHub Copilot (free for students) — AI coding in VS Code.
6. DALL-E 3 (via Bing) — Free text-to-image generation.
7. Canva AI — Design with AI assistance.
8. Grammarly AI — Writing suggestions and tone adjustment.
9. Notion AI — Organize notes and generate content.
10. Quizlet AI — Auto-generate flashcards from notes.
All have free tiers sufficient for most student needs.