94 of these 100 tools are free or have a free tier. Sub-categories: AI Search & Answer Engines, Deep Research & Documents, Academic Research, AI Tutors & Learning, AI OCR & Document Extraction, AI for Teachers & Classrooms, Language Learning AI, Travel Planning, AI Shopping Assistants, YouTube & Content Summarizers, Science & Research AI. Open Research & Learning in the app.
ChatGPT SearchFreemium Real-time web answers inside ChatGPT · Inline citations and follow-ups · Combines search with reasoning · Available on the free tier https://chatgpt.com/ · alternatives
Grok DeeperSearchFreemium Live search across X and the open web · Best for breaking news and trends · Reasoned, sourced summaries · Free daily queries https://grok.com/ · alternatives
KomoFreemium Fast, ad-free AI search · Explore, chat and research modes · Privacy-oriented · Free to use https://komo.ai/ · alternatives
Kagi AssistantTrial Bundled with Kagi's paid ad-free search subscription · Lets users pick underlying model (Claude, GPT, Gemini) · Deep research/thread mode with citations https://kagi.com/assistant · alternatives
ExaFreemium Search API built specifically for AI agents/LLMs, not humans · Indexes 80B+ documents, sub-180ms answers · Structured JSON extraction across companies/code/docs https://exa.ai/ · alternatives
TavilyFreemium 1,000 free API credits/month, no card required · Search + Extract + Research + Crawl + Map endpoints · 300M+ monthly requests, 2M+ developers https://tavily.com/ · alternatives
ParallelFreemium Recurring monthly free allowance of several thousand requests · Deep research + entity monitoring with webhooks · Confidence-scored 'Basis' source verification framework https://parallel.ai/ · alternatives
FeloFreemium Free multilingual AI search & creation platform · Combines search with document/content creation tools · Strong traction in Japan/Asia markets https://felo.ai/ · alternatives
PerplexicaFree MIT-licensed, fully self-hostable open-source Perplexity clone · Runs with local LLMs via Ollama or cloud providers · Uses SearxNG for private, ad-free web search https://github.com/ItzCrazyKns/Perplexica · alternatives
iAsk.aiFreemium Free AI answer engine aimed at students/researchers · Cited, checkable sources with no data storage claim · Built-in AI video tutor and PDF/document analysis https://iask.ai/ · alternatives
Metaso AI Search (Mita)Free Ad-free AI search with direct answers · Built-in slide presentation and video generation · File upload and API access · Free to use https://metaso.cn/ · alternatives
Nano AI Search (360)Free Calls 16+ Chinese large models (Doubao, Ernie, Qwen, MiniMax) in one search · Multi-model debate and brainstorm modes · Text, voice, photo and video search · Generates web pages, videos, images and PPTs from queries https://www.n.cn/ · alternatives
Baidu AI SearchFree Ad-free AI answers built on Baidu Search, Wenku, Health and Law content · Powered by Baidu's ERNIE models · Available on Baidu app, desktop and mobile web · Free for all users per Baidu's free-chatbot policy https://chat.baidu.com/ · alternatives
ChatGPT Deep ResearchFreemium Runs up to ~30 min for exhaustive reports · Browses hundreds of sources · Structured, cited long-form output · Limited runs on lower tiers https://chatgpt.com/ · alternatives
Gemini Deep ResearchFreemium Multi-step research across the web · Editable research plans · Long, organized reports · Available with Gemini https://gemini.google.com/ · alternatives
NotebookLMFreemium Grounded answers from your own sources · Audio Overviews (podcast-style) · Mind maps and study guides · Free tier available https://notebooklm.google/ · alternatives
ChatPDFFreemium Chat with any PDF or document · Cited answers with page references · Summaries and key points · Free daily PDFs https://www.chatpdf.com/ · alternatives
AlphaSensePaid AI search across SEC filings, earnings transcripts, broker research, private data · Enterprise workflow automation for financial/deal research · Integrates FactSet, S&P Capital IQ, PitchBook https://www.alpha-sense.com/ · alternatives
STORM (Stanford)Free MIT-licensed open-source system that researches a topic and writes a full cited report · Perspective-guided simulated conversations to deepen research before writing · Co-STORM variant adds human-AI collaborative curation https://github.com/stanford-oval/storm · alternatives
GPT ResearcherFree Planner and executor agents gather from 20+ web sources · Produces cited reports exported as PDF, Word or Markdown · Also researches local PDFs, text and Excel files · Works with many LLM providers; Apache 2.0 https://github.com/assafelovic/gpt-researcher · alternatives
Tongyi DeepResearchFree 30.5B-parameter MoE agent (3.3B active) with 128K context for long-horizon research · Free demos on Hugging Face Space and ModelScope · Also reachable through OpenRouter API · Apache 2.0; ReAct and IterResearch Heavy modes https://github.com/Alibaba-NLP/DeepResearch · alternatives
MiroThinkerFree Deep research agent with up to 300 tool calls per task and 256K context · Scores 74.0 on BrowseComp and 75.3 on BrowseComp-ZH (v1.7) · Free online demo at dr.miromind.ai · Apache 2.0 https://github.com/MiroMindAI/MiroThinker · alternatives
Open NotebookFree Self-hosted NotebookLM alternative over PDFs, video, audio and web pages · Works with 18+ AI providers including Ollama · Generates podcasts with 1 to 4 speakers · MIT licensed with REST API https://github.com/lfnovo/open-notebook · alternatives
ima.copilot (Tencent ima)Free AI workbench that searches, reads and writes from a personal knowledge base · Dual engine with Tencent Hunyuan and DeepSeek-R1 · Shared knowledge bases; Windows, Android and mini-program apps · 2GB free cloud storage at launch https://ima.qq.com/ · alternatives
ElicitFreemium Find and summarize research papers · Extract data across studies · Systematic-review workflows · Free monthly credits https://elicit.com/ · alternatives
ConsensusFreemium Answers grounded in peer-reviewed papers · Consensus Meter across studies · Study snapshots and quality · Free searches https://consensus.app/ · alternatives
SciSpaceFreemium Explain and chat with any paper · Literature review and comparison tables · Paraphrase and citation help · Free tier https://scispace.com/ · alternatives
UndermindFreemium Exhaustive, agentic literature search · Finds hard-to-surface papers · Explains why each result matters · Free searches to start https://www.undermind.ai/ · alternatives
Semantic ScholarFree Fully free AI-powered search across 237M+ scientific papers · Semantic Reader augmented-reading tool for papers · Free public API used by many other research tools https://www.semanticscholar.org/ · alternatives
ResearchRabbitFree Visual citation-network mapping across 310M+ papers · Zotero integration for reference management · Used by 1M+ researchers at Harvard/Stanford/MIT/Oxford, free to sign up https://www.researchrabbit.ai/ · alternatives
Connected PapersFreemium Visual graph of related papers built from co-citation analysis · Free graphs per month before requiring paid Academic/Pro plan · Prior-work and derivative-work graph views https://www.connectedpapers.com/ · alternatives
LitmapsFreemium Network-map visualization of citations across a research topic · Automatic monitoring/alerts for new relevant papers · 350,000+ researchers across 150 countries https://www.litmaps.com/ · alternatives
SciteTrial 'Smart Citations' show whether a paper is supported, contrasted, or just mentioned by later work · Browser extension and Zotero/reference-manager integrations · Search and Assistant need a paid plan; the free tier excludes them and trials auto-enroll into a subscription. https://scite.ai/ · alternatives
ScholarcyFreemium Auto-generates 'summary flashcards' from papers/reports in seconds · Chrome extension for one-click summarization while browsing · Free tier for individual summaries; paid for libraries/teams https://www.scholarcy.com/ · alternatives
Ai2 Paper Finder (Asta)Free Agentic literature-search tool built by Ai2, now folded into the broader 'Asta' research-agent platform · Free to use, iteratively expands/narrows search based on natural-language queries · Built on Semantic Scholar's corpus https://asta.allen.ai/discover · alternatives
alphaXivFree Free overlay for arXiv papers with public discussion/comment threads per paper · Personalized research feed and researcher-follow system · Browser extension and MCP server for agent integration https://www.alphaxiv.org/ · alternatives
Emergent MindFreemium Surfaces trending arXiv papers with video/whiteboard-style explainers · Aggregates social-media discussion signal per paper · Free basic access with a separate paid pricing tier https://www.emergentmind.com/ · alternatives
PaperQA2Free RAG over PDFs with in-text citations grounded in passages · Agentic search that iteratively refines evidence · Integrates academic metadata for citation tracking · Apache 2.0; calendar-versioned release Dec 2025 https://github.com/Future-House/paper-qa · alternatives
PaperpalFreemium AI rewriting, translation and citation finding for manuscripts · MS Word add-in and Chrome extension for Docs and Overleaf · Free plan: 5 AI uses per day and 200 language suggestions per month · PDF chat, plagiarism and AI detection on paid tiers https://paperpal.com/ · alternatives
AnaraFreemium Cited answers linked to exact passages in papers and uploaded files · Searches PubMed, arXiv and JSTOR; Zotero and Mendeley connectors · Permanent free tier with 20MB/120-page imports · Benchmarked 97% multi-document answer correctness (vendor claim) https://anara.com/ · alternatives
KhanmigoFreemium Socratic AI tutor from Khan Academy · Guides instead of giving answers · Teacher tools included · Free for teachers; low-cost for learners https://www.khanmigo.ai/ · alternatives
Google LearnLMFree Learning-tuned tutoring in Gemini · Guided Learning and study modes · Step-by-step explanations & quizzes · Free with Gemini https://gemini.google/overview/study/ · alternatives
Duolingo MaxPaid AI roleplay and 'Explain My Answer' · Video-call practice with Lily · Gamified language learning · The Max AI features are exclusive to paid Max subscribers; the free Duolingo app does not include them. https://www.duolingo.com/ · alternatives
QuizletFreemium AI flashcards and practice tests from notes · Q-Chat tutor and study guides · Learn mode adapts to you · Free core features https://quizlet.com/ · alternatives
ChatGPT Study ModeFreemium Socratic step-by-step tutoring mode built into ChatGPT rather than direct answers · Available to Free, Plus, and Pro ChatGPT users · Distinct product surface from the base ChatGPT entry already listed https://openai.com/index/chatgpt-study-mode/ · alternatives
PhotomathFreemium Free Basic plan with full step-by-step explanations and visual aids · Camera-based problem scanning including word problems · Covers elementary through college-level math (algebra to calculus) https://photomath.com/ · alternatives
SymbolabFreemium Step-by-step explanations across algebra, calculus, trig, geometry, physics · Multiple input methods: typed, natural language, or photo · AI chat support for follow-up questions on a solution https://www.symbolab.com/ · alternatives
KnowtFreemium Positions as the free Quizlet alternative, with unlimited learn mode/practice tests free · AI lecture notetaker transcribes and generates flashcards from recordings · 1M+ users, ~50% of AP test-takers used it in May 2025 https://knowt.com/ · alternatives
Turbo AI (formerly Turbolearn)Freemium Converts uploaded PDFs/videos/recordings into notes, flashcards, quizzes, and podcasts · AI lecture notetaker records and organizes notes live · 10M+ learners, rebranded from Turbolearn to Turbo AI in 2026 https://www.turbo.ai/ · alternatives
AskYourPDFFreemium Chat with any PDF plus auto-fill PDF forms · Embeddable document chatbot for websites · 5M+ users including MIT/Harvard/Oxford/Stanford https://askyourpdf.com/ · alternatives
PDF.aiFreemium Chat-with-PDF product plus a separate parse/extract/split PDF API · Popular ChatPDF-category alternative with API access for developers https://pdf.ai/ · alternatives
HumataFreemium Free tier: 60 pages, 10 answers, no card · Cited answers across many uploaded files at once · Paid tiers priced per extra page rather than per seat https://www.humata.ai/ · alternatives
Mistral OCR 4Freemium Self-hostable single-container OCR model for regulated industries · 170 languages, bounding boxes and per-field confidence scores · Low per-thousand-page API pricing; free to try inside Le Chat https://mistral.ai/news/ocr-4/ · alternatives
LlamaParseFreemium Parses 90+ formats incl. complex tables/charts/handwriting into clean markdown · 300,000+ users, 1B+ documents processed · Free trial credits via LlamaCloud, then usage-based https://www.llamaindex.ai/llamaparse · alternatives
ReductoFreemium 15,000 free starter credits, no card required · Citation-ready structured JSON across 30+ file types · Edits extracted data back into original PDF/DOCX layout https://reducto.ai/ · alternatives
MathpixFreemium Specializes in STEM: equations, chemistry structures, handwriting to LaTeX/text · Desktop Snip app plus Convert/Files developer APIs · 50B+ pages processed, 5M+ users https://mathpix.com/ · alternatives
olmOCRFree Apache 2.0 open-source OCR toolkit from Ai2, 19.3k GitHub stars · Vision-language-model based, handles equations/tables/multi-column layout · Runs at a fraction of commercial OCR cost on a 7B model https://github.com/allenai/olmocr · alternatives
DoclingFree MIT-licensed, 64.7k GitHub stars, IBM Research-originated, now under LF AI & Data Foundation · Advanced PDF layout + table structure recognition, local execution · Exports to Markdown/HTML/JSON, integrates with LangChain/LlamaIndex https://github.com/docling-project/docling · alternatives
MarkerFree Apache-2.0 code, 38.7k GitHub stars, converts PDFs/DOCX/PPTX/XLSX to markdown/JSON · 76.0% accuracy on the olmocr-bench benchmark · Runs on GPU, CPU, or Apple Silicon; optional LLM-boosted accuracy mode https://github.com/datalab-to/marker · alternatives
Upstage Document AIFreemium Parse/Extract/Classify/Instruct pipeline billed per page · Classify and Instruct currently free in beta · Free 1-year access to Document Parse for schools/hospitals/nonprofits https://www.upstage.ai/pricing · alternatives
MarkItDownFree Converts PDF, Office files, images, audio and HTML into LLM-friendly Markdown · Ships an MCP server for agents · Open-source Python package and CLI · Optional LLM-based image description https://github.com/microsoft/markitdown · alternatives
LangExtract (Google)Free Python library extracting structured data from unstructured text with LLMs · Maps each extraction to its exact source span · Works with Gemini, OpenAI and local Ollama models · Interactive HTML visualization of results https://github.com/google/langextract · alternatives
MinerUFree Parses PDFs, images and Office files into Markdown, JSON, HTML or LaTeX · Runs fully locally with OCR, table and formula recognition · Free hosted web app at mineru.net plus agent-ready outputs · Version 4.0 adds four parsing quality tiers https://github.com/opendatalab/MinerU · alternatives
dots.ocr (dots.mocr)Free 3B vision-language model for layout parsing across many scripts · Converts charts and diagrams into SVG code · Scores 83.9 on olmOCR-bench · MIT licensed with free live demo https://github.com/rednote-hilab/dots.ocr · alternatives
DeepSeek-OCRFree Vision-language OCR that compresses document context optically · Document-to-Markdown, layout detection and figure parsing · Multiple resolution modes up to 1280x1280 · MIT license; DeepSeek-OCR2 released Jan 2026 https://github.com/deepseek-ai/DeepSeek-OCR · alternatives
PaddleOCR-VLFree 1B-parameter document parsing VLM (NaViT encoder + ERNIE-4.5-0.3B) · Handles text, tables, formulas, charts and handwriting · Supports 109 languages including Hindi and Arabic · Apache 2.0; newer PaddleOCR-VL-1.6 available https://github.com/PaddlePaddle/PaddleOCR · alternatives
Dolphin (ByteDance)Free Two-stage document-type and layout analysis then element parsing · Page-level and element-level parsing modes · Hugging Face Transformers integration · MIT licensed; Dolphin-v2 released Dec 2025 https://github.com/bytedance/Dolphin · alternatives
Chandra OCRFreemium Converts images and PDFs to HTML, Markdown or JSON with layout · Handles tables, forms and handwriting in 90+ languages · 85.8% on olmOCR benchmark (Chandra 2, Mar 2026) · Free playground at datalab.to; open weights under modified OpenRAIL-M https://github.com/datalab-to/chandra · alternatives
Surya OCRFreemium 650M-parameter OCR VLM covering 90+ languages · Layout analysis, reading order and table recognition · 83.3% on olmOCR-bench · Free playground at datalab.to; weights free for research, personal use and small startups https://github.com/datalab-to/surya · alternatives
MagicSchool AIFreemium 80+ free AI tools for teachers: lesson planners, rubric generators, writing feedback · FERPA/COPPA compliant, doesn't train on student/teacher data · Reports 7-10 hours/week saved per teacher across 20+ major school districts https://www.magicschool.ai/ · alternatives
Brisk TeachingFreemium Works inside Google Docs/Slides/Classroom and Microsoft Word/PowerPoint via extension · Adjusts reading levels, translates content, gives personalized student feedback · 2M+ teachers, 20,000+ school districts, 93% Common Sense Privacy Rating https://www.briskteaching.com/ · alternatives
SchoolAIFreemium 'Spaces' let teachers design their own AI learning experiences for students · 'Mission Control' dashboard tracks live student engagement/progress · ESSA Level III validated for improving critical thinking; free teacher tier https://schoolai.com/ · alternatives
CuripodFreemium Generates teacher-led interactive lessons aligned to 55+ curricula · Real-time AI feedback on student writing during class discussion · Reports 23-point gains on state reading/writing tests, largest for lowest performers https://curipod.com/ · alternatives
TweeFreemium Generates CEFR-aligned (A1-C2) texts, dialogues, and exercises across 10 languages · AI auto-grading for multiple-choice, written, and gap-fill responses · 500,000+ teachers, 6M+ exercises created, ~5 hrs/week saved claimed https://www.twee.com/ · alternatives
Aila (Oak National Academy)Free Generates lesson plans, slides, quizzes and worksheets · Aligned to England's national curriculum and exam boards · Draws on Oak's library of teacher-made content · Free for UK teachers; non-UK users get a demo account with three lesson plans https://www.thenational.academy/ai · alternatives
FlintFreemium Teacher-configured AI tutors and feedback tools for students · Free access for up to 80 users (teachers or students) · Paid tiers add SIS/LMS integration and analytics · K-12 focused https://www.flintk12.com/ · alternatives
ELSA SpeakFreemium Free plan includes AI role-play conversations and real-time pronunciation feedback · Speech-analysis engine trained specifically on English pronunciation accuracy · 92M+ downloads, 4.9-star rating, content from HarperCollins/Pearson/Oxford https://elsaspeak.com/ · alternatives
PraktikaFreemium Free tier with basic AI-avatar conversation practice, low-cost premium · Real-time pronunciation feedback and structured speaking/reading/listening lessons · Positions itself as a low-cost alternative to private tutoring https://www.praktika.ai/ · alternatives
TalkPalFreemium Supports 130+ languages for conversational AI practice · Free tier plus a 14-day free trial of premium features · 10M+ users, 4.7 app-store rating, 300+ unique conversation scenarios https://talkpal.ai/ · alternatives
Little Language LessonsFree Tiny Lesson: situational vocabulary and grammar on demand · Slang Hang: realistic native-speaker conversations · Word Cam: photo an object to get its label in the target language · Around 15 languages in the browser https://labs.google/lll · alternatives
MindtripFreemium Conversational itinerary building with live maps/booking links in one thread · ~350K monthly US visitors in its first 5-6 months per Ahrefs traffic data · Named to Fast Company's Most Innovative Companies list https://mindtrip.ai/ · alternatives
GuideGeekFree 1M+ consumer users per vendor, live since April 2023 (longer track record than most AI trip tools) · Partners with 60-70 tourism boards to power destination-specific conversational AI · Built by travel publisher Matador Network, not a pure AI startup https://www.guidegeek.com/ · alternatives
WonderplanFree Day-by-day itineraries from destination, budget and interests · Accommodation suggestions and editable plans · Download itinerary as PDF for offline use · Free with account; vendor says free 'for now' https://wonderplan.ai/ · alternatives
Amazon RufusFree Amazon's AI shopping assistant, now branded Alexa for Shopping (formerly Rufus) · Free for all Amazon customers in the Amazon app and website, no Prime membership required · Answers product questions and compares items using catalog data and reviews · Helps find gifts and recommendations conversationally https://www.amazon.com/ · alternatives
PhiaFree Chrome extension + iOS app that surfaces resale/secondhand alternatives while shopping · 300K-500K+ downloads within its first year per multiple 2026 reports https://phia.com/ · alternatives
DaydreamFree Proprietary fashion-trained AI understands cut/color/occasion, not generic product search · Search across 10,000+ vetted brands and 2M+ items · First third-party app to integrate Apple Visual Intelligence for shopping (Nov 2025) https://www.daydream.co/ · alternatives
NoteGPTFreemium 400,000 active Chrome Web Store users as of Jul 2026, ~12,683 ratings at 4.0/5 · Batch-summarizes up to 20 videos at once, works even on videos without captions · Bundles summaries with flashcards, mind maps and slide generation, not just text output https://notegpt.io/ · alternatives
GlaspFreemium 2M+ users per vendor; free web/PDF/Kindle highlighter with a social discovery layer of other users' highlights · AI YouTube-summary feature using ChatGPT/Claude alongside its core highlighting product · Cross-browser support (Chrome, Firefox, Edge, Safari, Brave, Opera) https://glasp.co/ · alternatives
EightifyTrial Summarizes YouTube videos up to 10 hours long in ~5 seconds · Translations/summaries in 40+ languages · Uses both Claude and GPT models under the hood per vendor https://eightify.app/ · alternatives
RecallFreemium Summarizes YouTube videos, articles and PDFs into a linked knowledge graph · Free forever plan: 10 AI summaries per month, unlimited saving and notes · API and MCP access even on the free plan · No credit card required https://www.recall.it/ · alternatives
AlphaFold ServerFree Free browser-based access to AlphaFold 3-class structure prediction for non-commercial research · Predicts structure/interactions of proteins, DNA, RNA, ligands in one model · Backed by the AlphaFold Protein Structure Database of 200M+ predicted structures https://alphafoldserver.com/ · alternatives
BoltzFree First fully open-source model to approach AlphaFold3-level structure prediction, MIT-licensed · Boltz-2 adds binding-affinity prediction, not just structure · Hostable free via community web apps (e.g. Tamarind Bio) or run locally https://github.com/jwohlwend/boltz · alternatives
Chai-1 (Chai Discovery)Freemium Chai-1 is free, Apache-2.0-licensed for academic and commercial use — a genuinely open structure-prediction model · Chai-2 (paid, enterprise) generates de novo antibodies directly from target epitopes, used by Lilly, Novartis, Pfizer https://www.chaidiscovery.com/ · alternatives
Kosmos (Edison Scientific / FutureHouse)Paid Autonomous AI agent that runs literature review + data analysis cycles, condensing ~6 months of research into a day per vendor · Publicly available via web interface and API, not an internal-only research demo · Kosmos itself requires a paid subscription; the free plan covers only standard agents. https://www.futurehouse.org/ · alternatives
BiomniFree General-purpose biomedical agent combining LLM planning with code execution · Integrates 150+ bioinformatics tools and 59 databases · Web interface so biologists can use it without coding · Open-source from Stanford SNAP lab https://github.com/snap-stanford/biomni · alternatives
Evo 2Free DNA language model at single-nucleotide resolution with 1M base-pair context · Variant effect prediction, sequence completion and genome design · Free hosted 40B access via NVIDIA build.nvidia.com · Apache 2.0 code, weights and training data open; published in Nature https://github.com/ArcInstitute/evo2 · alternatives
AI Scientist-v2Free Agentic tree search proposes ideas, runs experiments and writes papers · No human-authored templates needed · Open code from Sakana AI · Requires disclosure of AI use in resulting papers https://github.com/SakanaAI/AI-Scientist-v2 · alternatives
This page is a plain-HTML mirror of the same catalog data rendered by the Flocci AI Tools app at aitools.flocci.in. It exists because the app is a single-page application; the content is identical. Generated 2026-10-16.