ChatHelp is an AI-powered assistant platform for business, work, and study use cases. It offers over 100 AI tools, a free website chat widget for customer support, support for 175+ languages, integration with various applications, custom AI knowledge base creation, compatibility with multiple AI models including OpenAI ChatGPT, Anthropic Claude, and Google Gemini, and support for users to input their own AI API keys.
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ChatPDF is a service for chatting with PDF documents, summarizing and answering questions about them. It accepts PDFs, files, videos and websites, and offers multi-file chats, cited sources, translation and a side-by-side view. The backend API lets users extract information from PDFs and create custom chatbots.
Comfy is a visual AI creation engine built around ComfyUI, a node-based canvas for connecting models, processing steps and outputs. A Comfy Agent can plan, build and run workflows from a description. Workflows can be deployed as a production API, and Comfy Cloud offers pre-loaded models and pre-installed custom nodes. Desktop and enterprise options are also presented.
Copyseeker is a reverse image search service that analyzes an uploaded image or a pasted URL. It reports where an image came from, indicates whether it was AI-generated, flags explicit content with a confidence score, and extracts text from images in over 50 languages. Each tool is also offered as a REST API, and the service is available as a Chrome extension, an iOS app and a custom GPT. No account is required to run a search. Paid plans are billed monthly, yearly, or as a one-time lifetime purchase.
Credyt is real-time monetization infrastructure for AI. It is intended to let builders observe spend per API call, model and customer, enforce budget limits before usage is authorized, and bill customers across usage-based, subscription, hybrid, credit and token pricing models. The team cites backgrounds at Visa, Checkout.com, TrueLayer and SumUp.
D3.js is a JavaScript library for bespoke data visualization developed by Observable. It enables creation of custom dynamic visualizations with features including selections and transitions, scales and axes, shape rendering, interactive behaviors, layout algorithms, and geographic map projections. The library also powers Observable Plot, a high-level visualization API.
depositar is a research data repository built on the open source CKAN package and customized for research data management. It is open to all researchers and free to register. Datasets can be searched by spatiotemporal ranges, data types and keywords, indexed by Google Dataset Search, and accessed through Web APIs and structured data endpoints.
ElevenLabs is an AI voice and audio platform. It provides an AI voice generator with access to more than 5,000 voices across over 70 languages, plus voice cloning, text-to-speech, dubbing, music generation, sound effect design, and conversational AI agent tools. The platform serves both individual creators and enterprise customers, with SDKs and APIs available for developers.
Epsilla is an agent-as-a-service platform for enterprises to build, deploy and manage custom AI agents without coding. It offers a no-code agent builder, RAG as a service, multi-tenancy, analytics and A/B testing, with SaaS, on-premise or private cloud deployment. The site also describes HarnessRouter, a unified Agent API for running multiple agent harnesses.
Export YouTube Playlist is a free web tool that exports public YouTube or YouTube Music playlists to formats such as CSV, Excel, Text, JSON or Bookmark HTML, without sign-up. Users can customize which items and fields to export. No API keys are required.
For the Badge creates custom SVG badges for projects. It offers a visual generator for badge design and a REST API that returns badges via query parameters. The project is open source, and badges can be exported as SVG or copied as markdown for use in READMEs.
Iconify is an open source project offering icon sets through one framework. It began in 2016 as an experiment to replace icon fonts, and the SVG framework loads icon data from an API only for icons used on a page. It aims to give developers freedom to choose icons and make it easy to add custom icons or icon sets. Project code uses open source licenses, while icon sets use various licenses.
joliGEN is an integrated framework for training custom generative AI image-to-image models. It implements GAN, diffusion and consistency models for paired and unpaired image-to-image translation, including domain and style adaptation that preserves semantics such as image and object classes and masks. A server with REST API is provided for deployment, and documentation includes quickstarts and dataset guidance.
KushoAI is AI-native infrastructure for software maintenance, with autonomous agents integrated into customer CI/CD pipelines to handle continuous testing, healing, and monitoring. It automatically generates test suites from OpenAPI specifications or Postman collections to catch breaking API changes before production.
Kutt is a free, open source modern URL shortener. It supports custom domains, link management, usage statistics, an API for programmatic access, and offers browser extensions for Chrome and Firefox, with options to self-host the service.
Mail.td is a temporary email service built for receiving email at scale. It offers password-protected inboxes and custom domains. A Pro plan adds webhooks and higher API limits for teams. The service is receive-only, and email retention differs between the Free and Pro plans.
Marginalia Search is an experimental internet search engine focused on text-oriented websites, particularly small, old, and obscure sites. It aims to provide alternative, non-commercial discovery without requiring expensive data centers. The system can be self-hosted on affordable hardware and also offers a white-label option for custom data. Funding is planned through grants, donations, and commercial API licenses, while non-commercial use remains free.
McMaster-Carr is a supplier offering over 595,000 products across categories such as fastening, electrical, plumbing, raw materials and hand tools. Most ordered products ship from stock and deliver same or next day. A product information API lets approved customers retrieve publicly available product information programmatically.
mexopencv is a collection and development kit of MATLAB MEX functions for the OpenCV library. It provides MATLAB MEX functions interfacing a hundred OpenCV APIs and includes a C++ class converting between MATLAB and OpenCV data types. The package is intended for fast prototyping of OpenCV applications in MATLAB and for developing custom MEX functions.
Mojeek is a web search engine that states a no tracking privacy policy and offers search results. It also provides search APIs for individuals and organisations that want to retrieve results from Mojeek's web search index, with customisable packages and pricing listed separately.
Novu is described as open-source notification and agent communication infrastructure. One API connects AI agents and products to customers across in-app, email, SMS, push, WhatsApp, Slack, Microsoft Teams and Telegram, and an Inbox component can be added to an app. Novu Connect plugs an AI agent into channels such as Slack, Teams, WhatsApp, email and Telegram, starting from templates.
An offline AI application for phones and Macs that supports chat, image generation, vision, Whisper speech-to-text, tool calling and local-network servers. It runs on CPU, GPU or NPU, requires no account or API key, and keeps data on the device. A paid Pro tier adds voice mode, custom personas and draft-and-approve actions.
Evals is a framework for evaluating large language models and systems built using LLMs. It offers an existing registry of evals to test different dimensions of OpenAI models and the ability to write custom evals. It is available as an open-source registry of benchmarks. Evals require an OpenAI API key.
OpenLLM is a project from BentoML for running open-source LLMs or custom models as OpenAI-compatible APIs with a single command. It includes a built-in chat UI, inference backends, and a workflow for cloud deployment with Docker, Kubernetes, and BentoCloud, and it does not store model weights. A Hugging Face token is required for gated models.