Alternatives to Casper AI

Sharly AI summarizes, compares, and cites your research documents with source-backed answers in APA, MLA, or Chicago.

Chrome extension that summarizes any web page, answers by chat, and lets you talk to pages by voice.

Humata AI is a PDF AI that answers questions across your documents with cited links into the exact source section — citations you can trace

Paxton AI is a legal AI assistant that grounds litigation research and drafting in your case's matter record.

Chrome extension that AI-summarizes any Reddit thread, subreddit, or search page and lets you chat follow-ups without leaving the tab.

MyMemo AI turns your saved links, videos, PDFs and voice notes into a searchable knowledge base you chat with.

Glasp is a social highlighter and AI memory: capture highlights from web pages and PDFs, then chat with them.

Glarity is a free Chrome extension that summarizes YouTube videos, PDFs and webpages with ChatGPT, Claude and Gemini.

Proactive AI second brain that organizes saved pages, PDFs, videos and tweets into guided learning Flows.

SciSpace is an AI research platform for chatting with PDFs, running literature reviews, and writing papers with citations.

AI academic summarizer that turns research papers, PDFs, and videos into interactive summary flashcards.

Multi-LLM browser agent for Chrome, Edge, and Brave — press Alt+A to chat, summarize, and automate on any page.

Free PDF editor with a built-in AI Copilot for chatting with, editing, converting, and e-signing PDFs

SnapVee Studio downloads public video in HD and 4K, then transcribes, summarizes, and repurposes it in one workspace.

Box pairs secure cloud content management with permission-aware AI for document Q&A, extraction, and drafting.

Anara is an AI research assistant that searches 300M+ papers and cites every answer to the exact passage in your source.

Read.ai is an AI meeting assistant that turns Zoom, Meet, and Teams calls into searchable summaries, action items, and transcripts.

Castmagic is an AI content operating system that turns one audio or video recording into 100+ publish-ready assets.

Free Chrome extension that summarizes English YouTube videos into ChatGPT bullet points and key insights in one click.

Turn open-access research papers into audio podcasts and ask them questions by chat.

AI-generated nonfiction book summaries you can listen to or read in minutes.

Explainpaper explains dense research paper text in plain language — highlight any confusing sentence and get a clear answer using the whole

Otio is a persistent AI research workspace that keeps every PDF, article, video and transcript you upload in one searchable library, with page-level citations

AI research assistant with source citations that search 300M+ papers and cite the exact passage in every answer

Microsoft 365 Copilot is an AI assistant inside Word, Excel, Outlook, and Teams that grounds answers in your tenant data.

Google's sovereign Gemini offering for U.S. government agencies, pitched at FedRAMP High, IL4, and IL5 environments

Heptabase: a visual knowledge base with an AI Tutor that turns your sources into structured study sessions.

VectorShift is an AI operating system for private market investors, tracing every figure back to the source document and page.

Outread runs citation-backed AI research across 300+ scientific, clinical, regulatory and patent databases.

Gemini Notebook (formerly NotebookLM) is Google's source-grounded research assistant that answers only from files you upload and cites the