Open Government Portal provides a searchable catalogue of Government of Canada open data. It lists datasets by publisher, format, subjects and update frequency, and includes guidance on working with datasets. The source describes open data as machine-readable, freely shared and reusable without restrictions.
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Open Government Data of Kerala is a portal associated with the Open Government Data (OGD) Platform India. The OGD Platform India serves as a single-point access to open format resources published by Indian government ministries, departments and organizations, and provides details of open data events, visualizations, blogs and infographics.
An open-source coding agent built for low-cost and open-weight models.
Open Knowledge Maps is a nonprofit, open science AI-based search engine for scientific knowledge. It provides visual overviews of research topics, helps users find relevant research outputs and identify key concepts. The platform searches over 400 million outputs from more than 11,000 sources, with results based solely on underlying metadata to avoid hallucinations.
Open Library is an open, editable library catalog building toward a web page for every book ever published. Users can read, borrow and discover more than 3M books for free, and contribute corrections and new information like Wikipedia. It also provides APIs for book discovery and lookup services.
Open Nbs is a GitHub repository or organization with source code, releases, documentation, or project resources.
Open Notebook is an open-source, AI-powered note-taking and research platform focused on user privacy. It includes a podcast generator that transforms notes into customizable audio content, AI tools for summarizing notes and generating insights, granular privacy controls for AI data access, and support for integrating links, PDFs, text files, presentations, YouTube videos and other content types. The platform is designed for researchers, students, and learning enthusiasts.
Open Penticton is a public data platform that allows users to discover, analyze and download datasets. Available download formats include CSV, KML, Zip, GeoJSON, GeoTIFF and PNG. The platform provides API links for GeoServices, WMS and WFS, and supports creating charts, thematic maps, StoryMaps and Web Maps.
Open Power System Data is a free-of-charge data platform for electricity system researchers and power system modelling. It collects, checks, processes, documents and publishes publicly available power system data that is inconvenient to use, covering installed generation capacity, individual power plants and time series such as consumption, spot prices and wind and solar generation. Processing scripts are open source on GitHub and data is published primarily as CSV files with JSON metadata.
Open Research Data @PUC-Rio is a project of the Maxwell System that shares data developed or modified for theses, dissertations, monographs, senior projects, articles and technical reports at the university. Datasets span all areas of knowledge and many digital formats and can be searched and retrieved. Submission requires at least one author from the PUC-Rio community and open access data.
The Open Science and Data Platform provides access to scientific data, publications and information about development activities across Canada. Its content can be used to understand the cumulative effects of human activities to support improved future decision-making. The platform is available in both English and French.
Open SDG Data Hub is an ArcGIS Hub platform focused on dataset discovery and access. It allows users to discover, analyze and download data in formats including CSV, KML, Zip, GeoJSON, GeoTIFF and PNG. The platform provides API links for GeoServices, WMS and WFS, and supports the creation of StoryMaps and Web Maps for data visualization.
Open Source Design is a community of designers, developers and advocates working to improve the usability of open source software. It runs a job board connecting designers with projects, organizes events and conference design tracks, and shares openly licensed resources and open source design tools.
Read practical guidance on starting and contributing to open-source projects.
This Discord page presents Discord's open source projects and the open source communities hosted on Discord. It states Discord's commitment to open source development principles and lists contributions including Access, a portal for employees to discover and manage access to internal systems. It also lists open source libraries used to build Discord and invites users to create a server for their project.
Open Sustainable Technology is a directory and analysis of the open source ecosystem in climate change, sustainable energy, biodiversity and natural resources. Its stated mission is to find, list, and share projects that preserve or analyze natural ecosystems through open technology, methods, data, intelligence, knowledge or tools. Contributions are invited via pull request or email.
Open WebUI is a self-hosted AI interface for running AI on the user's own hardware. It connects to local or cloud models including Ollama, OpenAI, Anthropic, or compatible services, and can be extended with Python. The project offers community-shared prompts, models, tools, and functions, and lists deployment options including on-premises or air-gapped setups. Installation can be done with a pip command.
Open Yale Courses is a free educational resource providing full sets of materials for Yale undergraduate courses. Each course includes high-quality recorded video lectures, syllabi, suggested readings, exams, and problem sets. Lectures are available as downloadable videos, audio-only files, and searchable transcripts. Some previously listed courses have been removed and are now accessible via Yale's official Coursera platform.
OPEN-ADAS is a system for searching and distributing key data from the Atomic Data and Analysis Structure (ADAS), a computer program managed by the University of Strathclyde. It allows non-members interested in fusion and astrophysics to download and use ADAS data. The service supports searches by freeform text, wavelength and ion, and covers numerous data formats.
open-loiret.opendata.arcgis.com is an ArcGIS Hub site that provides access to geospatial datasets. Users can discover, analyze and download data in formats including CSV, KML, Zip, GeoJSON, GeoTIFF and PNG. The site offers API links for GeoServices, WMS and WFS, and supports the creation of StoryMaps and Web Maps.
OpenAudio is a list of open-source audio software projects, covering apps, plugins and libraries. The intent is to catalog open-source audio apps, plugins such as VSTs, and other resources that are either fully featured or useful examples with non-trivial features. It includes sections for audio plugins, collections, audio apps, development libraries and APIs, code samples and open data resources.
The OpenAI Agents SDK is a lightweight Python package for building agentic AI applications with few abstractions. It provides primitives including agents with instructions and tools, handoffs for delegating tasks between agents, and guardrails for validating inputs and outputs. It includes built-in tracing for visualizing and debugging agentic flows. The SDK uses the Responses API by default for OpenAI models and wraps model calls in a higher-level runtime.
OpenAllURLs is a browser-based tool that opens a pasted list of URLs, up to 250 links, in new tabs at once. It removes duplicates, accepts only URLs starting with http:// or https://, and displays an indexed table of the parsed links. Processing happens in the browser without an account.
OpenAlternative is a curated collection of open source alternatives to everyday SaaS products. The site lists projects with repository stars, last commit times, licenses, and short descriptions, and notes support from partners and sponsors. It describes itself as a crowdsourced directory of open-source software.