A free and open source binary newsreader for Usenet. It runs on Windows, macOS, Unix and NAS devices and is managed from any device with a web browser. It integrates with automation apps, reads RSS feeds, runs custom scripts and ships in 16 languages.
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Portmaster is a free and open-source application firewall from Safing that monitors network connections on a computer. It blocks trackers and malware hosts system-wide and routes DNS queries over DNS-over-TLS by default. Users can set global and per-application rules, including cutting off applications from the internet or restricting connections to certain countries. Downloads are offered for Windows, Debian/Ubuntu and Fedora.
SAGE is an open-source project hosted on GitHub, with the full name (Sovereign) Agent Governed Experience. The repository is intended for collaborative development of the SAGE tool focused on agent-governed user experiences.
Samay is a free and open source group scheduling tool. It helps find a time which works for everyone without the back-and-forth texts and emails. The page shows a scheduling grid and offers group poll and one-on-one poll options.
samplv1 is an old-school all-digital polyphonic sampler synthesizer with stereo fx. It is available as a stand-alone JACK client with JACK-session, NSM and JACK/ALSA MIDI input support, and as an LV2 instrument plug-in. It is free, open-source software under the GNU GPL version 2 or later.
SamsungTVPlus is an open-source tool for accessing and playing streamed media, with code and setup documentation on its project page.
Sandstorm is an open source platform for self-hosting web apps. Each document, chat room or other item is containerized in its own sandbox, and items stay private until shared through a unified access control interface. Apps are installed from an App Market and receive automatic updates. Users can run it on their own machines or on hosting services.
SankeyMATIC is an online Sankey diagram builder created in 2014 by Steve Bogart. Users enter flows in a Source [Amount] Target format and adjust diagrams with interactive controls. Diagrams can be exported as PNG or SVG images, and work can be saved as a plain text file. Data processing happens locally in the browser.
Sav PDF Viewer is a PDF reader for Android that is open source and requires no permissions. It supports search, text selection and copying, bookmarks, resuming reading, password-protected PDFs and night mode. Links within documents can be opened and files shared. The developer states it does not collect, store or transmit personal data, and that it is not a PDF editor.
SaverTuner is a Kotlin extension to the built-in Android Battery Saver. It lets users set profiles that save battery more or less aggressively, from daily optimization to extreme power saving. It uses hidden Android settings to specify custom behavior for the built-in battery saver.
Scan Note is a GitHub issue in the QL-Win/QuickLook repository. The issue reports that a user's antivirus detected a trojan in the QuickLook-4.0.0.zip file after extraction, with the user providing details of the antivirus alert and associated file access.
Scanner is an all-in-one scanner app built for the Universal Windows Platform. It works with WIA-compatible scanners, saves multiple pages as a PDF or separate images, and includes a built-in editor for cropping, rotating, drawing and highlighting, plus PDF page reordering.
A PHP package providing a fluent builder for all Schema.org types and their properties. Its classes are generated from Schema.org's JSON-LD standards file, and types can be converted to arrays, rendered to scripts, or encoded as JSON. Installation is via composer.
Schism Tracker is a free and open-source reimplementation of Impulse Tracker, a sample-based music composition tool. Its player is based on a modified ModPlug engine with bugfixes and playback changes. It runs on platforms supported by SDL, including Windows, macOS, Linux, and others.
Scholarcy is a tool for summarizing and organizing research, built around AI-powered tools described as made specifically for academic papers. It converts long texts into interactive summary flashcards highlighting key information, and accepts imports including PDFs, book chapters, articles, Zotero, Google Drive and YouTube. Summaries can be enhanced and exported to other apps and citation managers.
Sci Hub Now is a browser extension for Firefox, Chrome, and Edge. It provides one-click free access to academic papers via Sci-Hub. Users can manually install the latest release if store-published versions are under review.
Sci-Bot is an AI-powered research assistant powered by Sci-Hub. It is currently in temporary read-only maintenance mode, allowing users to browse previously answered questions but not submit new questions or sign in. It supports multiple languages, several citation formats, and adjustable generation speed.
Science.gov is a gateway to government science information from U.S. Government science agencies. It provides access to millions of authoritative scientific research results, including research and development outputs. Users can search across multiple databases, view results ranked by relevance, and access bibliographic citations, abstracts, and often full-text documents. Advanced search allows field-specific queries and source filtering. Format tabs and result actions such as download, print, and email are available.
Scikit-Image is an open-source Python library for image processing. Hosted on GitHub, the project provides installation resources, license information, and documentation for users, and accepts community contributions to the codebase.
A tutorial project for applying machine learning in Python with scikit-learn, a Python module built on numpy and scipy. It aims to teach practical application of scikit-learn algorithms; the stated audience is experienced Python developers familiar with numpy and scipy. Prebuilt PDF and HTML versions, tutorial source and exercise solutions are available, and the material is under a Creative Commons Attribution 3.0 license.
Scikit-Opt is an open-source Python library that implements a range of optimization algorithms. Its features include genetic algorithms, particle swarm optimization, simulated annealing, ant colony optimization, immune algorithm, artificial fish swarm algorithm, differential evolution, and tools for the traveling salesman problem. The project is hosted on GitHub and accepts community contributions.
Scikit-Survival is a Python library that implements survival analysis functionality built on top of the scikit-learn framework. It is hosted as a public open source repository on GitHub for community contributions.
SCInsta is a tweak for Instagram on iOS that modifies app behavior, including hiding ads, stories, and feed content, and downloading posts, reels, and stories. Version v1.1.1 was tested on Instagram 418.2.0. It is licensed under GPL-3.0.
SciTE is a SCIntilla-based text editor for source code. Originally built to demonstrate the Scintilla editing component, it has grown into a generally useful editor with facilities for building and running programs. It is available for Intel Windows 7 or later and Linux systems with GTK.