RTutor is a website and open-source project for analyzing data; users upload data, ask questions, and receive results in seconds. The site states that the RTutor website and source code are free for non-profit organizations only, with licensing required for commercial use. It also notes an 8-minute YouTube video for first-time users.
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RustCat is an open source project with code, documentation, and setup resources for network diagnostics.
Source 2 Viewer (S2V) is a free, open-source tool for browsing VPK archives and viewing, extracting and decompiling Source 2 assets, including maps, models, materials, textures, sounds and particles. The project is reverse-engineered without an official Source 2 SDK and is not affiliated with Valve Software. It supports games such as Counter-Strike 2, Dota 2, Deadlock and Half-Life: Alyx.
A showcase of landing page examples created by SaaS companies, intended as design inspiration. The site presents categories including landing pages, features pages and pricing pages, with curated selections of examples and links to visit each site.
A collection of SaaS landing pages with a focus on copywriting and design, organized by page sections such as navbars, headers, features, pricing and testimonials. Each block lists best practices and includes articles and screenshots from landing pages. The site also offers a company browsing view and a design comparison feature.
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.
Subdomain Finder is a scanner that scans an entire domain to find subdomains. It can check whether a subdomain is tunneling through CloudFlare and find historical subdomains no longer linked to endpoints. A scan may take up to 1 minute, and scanned data is stored in a cache for 7 days.
Seafile is an open source, self-hosted file sync and share solution. It offers granular sharing permissions, multi-level file tagging, and built-in collaborative docs and wiki. The software supports access from any device and includes encryption and audit logs.
Selenium is an umbrella project of tools and libraries for automating web browsers. It provides extensions to emulate user interaction and infrastructure for W3C WebDriver implementations, letting developers write interchangeable code for major browsers. It is primarily used for automating web applications for testing.
Selfh.st is a Linux, macOS, BSD, or Unix resource for tools, documentation, communities, or system workflows.
Semantic UI is a development framework for creating responsive layouts using human-friendly HTML. It treats words and classes as exchangeable concepts, using syntax from natural languages. It uses simple phrases called behaviors to trigger component functionality, and includes an intuitive inheritance system with high level theming variables. The project is described as free and open source.
SemanticDiff for GitHub is a web tool that lets users review GitHub commits and pull requests using a language aware diff. Users log in via GitHub. The site links example pull requests from axios, DevToys and Apache Drill.
serverbox is a Linux, macOS, BSD, or Unix resource for tools, documentation, communities, or system workflows.
ServerSearcher is an independent comparison site for cloud, VPS, dedicated, and GPU servers. It aggregates plans, pricing, and locations from multiple hosting providers so users can compare options in one place. ServerSearcher does not sell hosting; choosing a plan redirects to the provider's website to complete the purchase.
Sevalla offers static site hosting that deploys sites from Git without building pipelines. Every commit triggers a build, deploys to a consistent environment and pushes the site to a global edge network. Pull requests create automatic preview environments. The service supports GitHub, GitLab and Bitbucket, and detects frameworks and static site generators automatically.
shadcn-svelte provides composable, accessible components with thoughtful defaults, intended for building a custom component library with code that can be customized and extended. It offers a library of components, and a changelog notes the release of Trace, Code Block and AI Elements.
Sift is a command-line text search tool positioned as an alternative to grep, aiming for speed and flexibility. It is distributed as a single executable with no dependencies for Linux, Windows, OS X and BSD. Features include gitignore support, conditions, multiline matching and multi-core support, with global and local JSON configuration files.
Silex is a free, open-source visual builder for static websites aimed at professional web designers and no-code developers. It is maintained by Silex Labs, a French non-profit, and is a project of the OW2 open-source community. The tool can connect to a CMS or API, including WordPress, Strapi, Squidex and Supabase, and hosting is included. Silex can be used on v3.silex.me with nothing to install, or self-hosted.
SITE123 is a free website builder that requires no design or coding skills. It provides a website editor, responsive design, free hosting, SEO tools, online store and blog features. A free plan includes 250 MB storage and bandwidth on a subdomain, while premium plans add a free domain for one year and domain connection. Support is available 24/7 by live chat.
Slint is a declarative GUI toolkit for Rust, C++, JavaScript and Python, building native user interfaces for embedded, desktop and web from a single codebase. It supports integration into embedded Linux distributions such as Yocto, Torizon and Wayland, and can run on devices with or without a GPU. Pricing includes GPLv3 open-source, royalty-free and paid commercial options.
Somee.com is a hosting provider offering Virtual Private Servers, Windows hosting for ASP.NET and .NET Core, MS SQL database hosting, shared hosting and mail services. Plans are managed through a control panel, and both free and paid packages are listed.
sourcehut is a network of open source tools for software project maintainers and collaborators, including hosted git and Mercurial repositories, continuous integration, mailing lists and code review tools, ticket tracking, real-time chat, and wikis. It states no tracking or advertising and that features work without JavaScript. sourcehut is currently available as a public alpha.
sourcehut pages is a tool for publishing static websites. Every sourcehut user receives a username.srht.site domain, and custom domains are supported. It works with any content generator, including Jekyll, Hugo, and Doxygen, and provides automatic, zero-config TLS.
SPARTAN is a downloadable pixel art drawing and animation tool for Windows specialised in creating tiles and animated sprites for games. A suite of tools added for Procjam gives it the capability to parametrically generate tileable pixel art tiles, with a visual programming interface for chaining procedural modules.