Chatbots & Writing Assistants AI Tools

Chat with millions of user-created AI personas built for roleplay, companionship, and creative conversation.

Character.AI lets users create and chat with AI-driven characters — original personas, book/movie/game characters, or open-ended roleplay companions — each with a distinct personality and memory of the conversation. Anyone can build and publish their own character with a custom persona and greeting. Voice calls, group chats, and a Discover feed of trending characters round out the experience.

• Millions of user-created characters covering roleplay, fandom, and companionship
• Character creation tools — define personality, greeting, and voice
• Voice calls and group chats with characters
• Free tier available; unlimited messaging with slower response speed at peak times
• c.ai+ removes wait times and unlocks the newest model
• Mobile apps for iOS and Android alongside the web app

AI writing companion that rewrites sentences for clarity, tone, and length.

Wordtune focuses on rewriting rather than generating from scratch — it suggests alternative phrasings for a sentence or paragraph, adjusts tone (casual/formal), and can expand or shorten text, working as a browser extension across Gmail, Docs, and most websites.

• Sentence-level rewrite suggestions in multiple styles
• Tone adjustment between casual and formal
• Expand or shorten a passage on demand
• Works inline across Gmail, Docs, and most websites

AI resume and cover letter builder with professionally designed templates.

Kickresume combines AI writing assistance with designer-made resume and cover letter templates, generating draft bullet points from a job title and letting users refine wording, then export ATS-friendly resumes.

• AI-generated resume bullet points from a job title
• Professionally designed, ATS-friendly templates
• AI cover letter generator matched to a job posting
• Built-in resume checker for common formatting issues

AI search engine that gives sourced, cited answers alongside traditional results.

You.com is an AI-powered search engine that answers questions directly with cited sources, while also supporting specialized modes for coding, research, and image generation, positioning itself as a privacy-conscious alternative to traditional search.

• Sourced, cited answers instead of just a list of links
• Specialized modes for coding, research, and images
• Access to multiple underlying AI models
• Privacy-focused search positioning

AI translation tool known for more natural, context-aware translations.

DeepL is an AI-powered translation service that focuses on producing more natural-sounding translations than typical machine translation, supporting document translation while preserving formatting, alongside a writing assistant for tone and phrasing.

• More natural, context-aware translations than typical machine translation
• Document translation that preserves original formatting
• Supports 30+ languages
• Writing assistant for tone and phrasing (DeepL Write)

AI research assistant that finds and summarizes academic papers.

Elicit helps researchers search academic literature by question rather than keyword, summarizing findings from relevant papers and extracting structured data like methods and sample sizes across many studies at once.

• Searches academic literature by research question, not just keywords
• Summarizes findings across multiple papers at once
• Extracts structured data (methods, sample size) from studies
• Helps identify gaps in existing research

Google's AI research assistant that answers questions grounded only in your own documents.

NotebookLM lets someone upload their own documents, notes, or sources, then chat with an AI that answers questions and generates summaries strictly grounded in that uploaded material, reducing the risk of made-up answers.

• Answers are grounded only in the user's own uploaded sources
• Generates summaries and study guides from source material
• Can create an AI-narrated audio discussion of the sources
• Citations link every answer back to a specific source

AI search engine that answers questions using only peer-reviewed research.

Consensus searches a database of scientific papers to answer a question with findings pulled directly from peer-reviewed studies, showing a consensus meter for how much research agrees on a given claim.

• Answers grounded only in peer-reviewed research papers
• Consensus meter showing how much research agrees
• Extracts key findings instead of just linking to papers
• Filters by study type and sample size

Enterprise AI writing platform with built-in brand voice and compliance controls.

Writer is an enterprise-focused AI writing platform that lets large organizations enforce a consistent brand voice, style guide, and compliance terminology across every piece of AI-generated content company-wide.

• Enforces a company-wide brand voice and style guide
• Compliance and terminology checks built into generation
• Enterprise-grade security and data governance
• Custom AI apps for specific internal workflows

Chat with the content of any uploaded PDF document.

ChatPDF lets someone upload a PDF and ask questions about its content in plain language, getting answers with page-number citations instead of manually searching through a long document.

• Ask questions about a PDF's content in plain language
• Answers cite the specific page they came from
• Handles long documents like textbooks and reports
• No account required for basic use