AI Apps Directory

Multimodal database for AI — vectors plus raw data, versioned.

Deep Lake, by Activeloop, is a database for AI that stores vectors alongside raw multimodal data — text, image, video, audio, and metadata — in a single version-controlled format. It supports cross-modal queries and can stream data straight into training, and its open-source core can be self-hosted or run as a managed service. The newer Deep Lake PG unifies a serverless Postgres with its vector and tensor engine.

The AI-native document editor for long-form writing.

Type is a web-based document editor with AI woven directly into the writing surface, letting you summon writing commands and an iterative chat without leaving the page. It targets long-form work — books, screenplays, and stories — with character, scene, and world-building tools and drafts up to 150,000 words. A free perpetual tier covers drafts, with paid plans for power users.

Real-time AI meeting assistant — answers and notes during the call.

Cluely is a desktop and mobile assistant that listens to your meetings, interviews, and sales calls and surfaces real-time notes and answers as an on-screen overlay. It markets an 'undetectable' mode that hides the overlay from screen-sharing software so other participants can't see it. The startup launched in April 2025 and raised $15M from Andreessen Horowitz, repositioning from its viral 'cheat on everything' origins into a mainstream meeting assistant.

One autonomy brain for all robots.

FieldAI builds embodiment-agnostic foundation models that act as a general-purpose 'brain' for robots, letting a single autonomy stack drive many different robot bodies. Its risk-aware Field Foundation Models use a Belief World Model to operate in dynamic, unmapped environments without GPS or predefined trajectories. The company targets construction, industrial, energy, mining, and other real-world deployments.

Testing-first evaluation and monitoring for LLM and ML systems.

Deepchecks brings a testing-first approach to AI quality. Its open-source Python library validates ML models and data from research through production, and the LLM Evaluation product extends that into continuous validation of LLM applications — measuring quality, performance, and pitfalls across experimentation and production with CI/CD hooks. Enterprise deployment runs in VPC, on-prem, or bare metal for teams that can't use cloud-hosted eval.

Full-stack AI platform for computer vision and LLMs.

Clarifai is a full-stack AI platform for building with unstructured image, video, text, and audio data. It pairs production computer-vision models — classification, detection, visual search — with a model hub for LLMs, plus data labeling, training of custom models, and inference, all behind one API and console. A free Community tier lets you discover and run models before moving to paid usage plans.

Scrape and monitor data from any website with no code.

Browse AI lets you train a 'robot' by pointing at the data you want on a web page; it learns the pattern and then extracts that data on demand, on a schedule, or watches the page and alerts you when it changes. Results export to Google Sheets, Airtable, CSV/JSON, or a REST API, and connect onward through Zapier and Make. Built-in change monitoring and scheduled alerts make it suited to price tracking, job and listing alerts, and competitor watching.

AI document-processing API that turns files into structured data.

Mindee is a developer-first document-AI platform that converts photos, PDFs, and scans — invoices, receipts, IDs, financial and mail documents — into structured JSON through a single REST API, with no model training required. Beyond extraction it handles document splitting, classification, and cropping, and ships SDKs for Python, Java, PHP, and more. Billing is credit-based per page processed.

AI localization platform for software, docs, and content.

Crowdin is a translation-management platform that automates localizing apps, websites, games, and documentation. Strings flow in through 700+ integrations and 100+ file formats, then get translated via crowdsourcing, translation memory, and AI/machine-translation suggestions, with branching and an API/CLI to keep localization in sync with the codebase. Crowdin Enterprise adds data residency, SSO, and custom workflows.

Open compute marketplace and RL training stack for agentic models.

Prime Intellect aggregates GPUs from 50+ providers into an on-demand marketplace (1–256 GPUs with SLURM or Kubernetes orchestration) and pairs it with an open reinforcement-learning stack: the prime-rl async training framework, the Verifiers environment library, and a hub of 2,500+ community RL environments. Its INTELLECT model series demonstrates the stack at frontier scale, with weights and training recipes released openly.

AI code review with full-codebase context on every pull request.

Greptile builds a graph index of your repository and runs a swarm of agents over each pull request, catching cross-file logic bugs, security risks, and style violations that diff-only reviewers miss. It learns team standards from past review comments, enforces custom rules written in plain English, and reviews PRs on GitHub and GitLab, with TREX generating and running tests per PR.

Training data, evaluations, and enterprise GenAI from the data-labeling giant.

Scale supplies the human-annotated training data behind most frontier AI labs through its Data Engine, spanning labeling, RLHF, and expert red-teaming. On top of the data business it runs evaluation leaderboards, an enterprise GenAI platform, and Donovan, its platform for the US public sector.

Lifelike enterprise voice AI agents for customer service calls.

PolyAI's Agentic Dialog Platform builds voice agents that resolve customer service calls for large enterprises in banking, healthcare, hospitality, telecom, and retail. Agent Studio gives non-technical teams a no-code builder while the ADK exposes developer APIs, with SOC 2, HIPAA, GDPR, and PCI DSS compliance built in. Its proprietary Raven model is trained on over a billion enterprise conversations.

AI autocomplete and writing assistance inline across Gmail, Docs, and the web.

Compose AI is a browser extension that adds AI-powered autocomplete and text generation directly into the fields you already type in — Gmail, Google Docs, and most web apps. It finishes sentences as you write, drafts full emails from a one-line instruction, rephrases text, and supports custom shortcuts to expand snippets. The core extension is free, with a premium tier for personalization features.

Turn your text into editable diagrams, charts, and infographics — no prompting.

Napkin AI generates business visuals directly from text you already wrote: paste a paragraph, click, and it produces diagrams, flowcharts, scenes, and infographics with no prompt required. The AI reads context and relationships and offers multiple visual options you can recolor, restyle, and edit, then export as PPT, PNG, PDF, or SVG. It supports 60+ languages and real-time team collaboration.

Generate royalty-free music from text, built on a fully licensed catalog.

Loudly is an AI music platform that generates studio-quality, royalty-free tracks from a text prompt or a chosen genre and mood in seconds. It adds a remix studio, stem splitter, and sample-pack generator, plus a distribution add-on that ships finished tracks to Spotify, Apple Music, YouTube, and 40+ platforms. The Berlin company stresses that its model is trained only on its own consent-licensed music dataset, not scraped audio.

Record studio-quality podcasts and video remotely, then edit with AI.

Riverside is a browser-based studio that records each participant locally in separate tracks — up to 4K video and uncompressed audio — so quality isn't tied to anyone's internet connection. Its AI layer handles text-based editing, filler-word and background-noise removal, automatic clip generation, show notes, captions, and translation/dubbing into 30+ languages. A 2025 chat-based editor lets creators cut and repurpose footage by talking to an agent.

AI meeting notes that turn calls into finished decks, docs, and action items.

Supernormal joins your Google Meet, Zoom, and Microsoft Teams calls to record, transcribe, and write structured notes with summaries and assigned action items the moment a meeting ends. Beyond notes, it now drafts post-meeting deliverables — slides, spreadsheets, and documents — from the meeting context plus connected files. Notes push automatically to Notion, Slack, Salesforce, HubSpot, and Google Drive.

Community directory for discovering Model Context Protocol servers.

mcp.so is a community-driven directory that collects and organizes third-party MCP (Model Context Protocol) servers so developers can browse, share, and integrate external tools for AI apps. It ranks servers by real call volume with a "Call Ranking" leaderboard and offers Featured, Latest, Official, and Hosted filters. The project is open-source and still in preview.

GPT-powered AI tutor for conversational language practice.

Talkpal is an AI language-learning app that lets you hold open-ended voice and text conversations with a GPT-powered tutor across 80+ languages. It adapts to your level, corrects grammar and pronunciation in real time, and offers roleplays, debates, and topic-based practice. A free tier allows limited daily practice, with Premium removing limits.

An AI assistant that lives inside your messaging apps.

Poke is a personal AI assistant from Interaction that works through the chat apps you already use — Apple Messages, WhatsApp, Telegram, and RCS — rather than its own app. It connects to email, calendar, and 30+ services to draft replies, manage your inbox, schedule, track health, and run proactive automations called "recipes." Most non-real-time use is free; for heavier use you negotiate a monthly price with its AI before subscribing.

ByteDance's free AI assistant for chat, writing, and documents.

Doubao (豆包) is ByteDance's consumer AI assistant for everyday Q&A, content creation, document processing, translation, coding help, and multimodal interaction. Core features — dialogue, basic creation, document summarization, and translation — are free with no ads or paywalls. It runs on ByteDance's own Doubao models and is the most-used AI chatbot in China.

OpenAI's coding agent across terminal, IDE, web, and ChatGPT.

Codex is OpenAI's agentic coding tool that reads, edits, and runs code on your behalf. It spans a local terminal client (the open-source Codex CLI), a VS Code extension, a cloud agent that executes tasks in isolated containers with full repo access, and a surface inside ChatGPT. It runs on OpenAI's Codex-tuned models and can parallelize multiple agent tasks at once.

Open-source annotation platform for vision AI datasets.

Data-labeling suite for images, video, and 3D: bounding boxes, polygons, segmentation, keypoints, and object tracking, with AI-assisted labeling via SAM and custom models through its API and SDK. Ships as the MIT-licensed Community edition to self-host, the hosted CVAT Online with free and paid plans, or a self-hosted Enterprise tier.