github.com
Speed Test is an open source project with code, documentation, and setup resources for network diagnostics.
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github.com
Speedtest is an open source project with code, documentation, and setup resources for network diagnostics.
speedvitals.com
SpeedVitals is a website speed testing tool that runs page speed tests from 30 or more locations and devices and measures Core Web Vitals. It also provides a TTFB test, batch analysis of up to 50 tests, performance monitoring with email and Slack alerts, and reports including waterfall charts and resource summaries. The site lists free tools such as an image compressor and an SEO analyzer.
community.spiceworks.com
Spiceworks Community is a developer community or publication for programming discussions, news, tutorials, and help.
spritefusion.com
Sprite Fusion is an independent software company making tools for game development. Its tilemap editor is a free, web-based level design tool for crafting 2D tilemaps in the browser using any tileset, with auto-tiling, collisions and one-click exports to game engines. The company also offers a pixel art generator, a Pixel Snapper tool and an API.
sqlable.com
SQLable is a site that presents a planned collection of tools for SQL and databases, intended to simplify and optimize related work. The page states that the tools will remain useful to many developers despite AI automation and that new tools will be added over time. The site currently describes itself as a future destination rather than offering completed tools.
sqlook.com
SQLook is a web-based SQLite database manager that runs in the browser on the client side, with no installation or server required. It opens and creates SQLite databases, shows database structure and statistics, and includes an SQL query editor with syntax highlighting and query history. It also offers a visual query builder and a database generator with sample data population.
srvrlss.io
srvrlss is a directory that helps developers compare serverless platforms, self-hosted PaaS tools, edge compute providers, and managed runtimes. It provides structured provider profiles with technical details, pricing, regions, limits, and features, along with comparisons, alternatives, and pricing breakdowns. New providers and updates are added regularly.
sshx.io
sshx is a web-based collaborative terminal that lets users share a terminal with others by link on a multiplayer infinite canvas. It offers real-time collaboration with remote cursors and chat, end-to-end encryption, and a lightweight server written in Rust. It is available as a command-line tool for macOS, Linux and Windows.
stackblitz.com
StackBlitz is a collaborative browser-based IDE for web developers that runs development environments inside the browser through WebContainers, avoiding time-consuming local configuration. It also offers Bolt, which turns text into working web apps in the browser. The free Personal plan includes unlimited public projects and GitHub repositories.
stacking.dev
The stacking workflow describes stacked pull requests, stacked diffs and stacked changes as an alternative workflow for managing pull requests. The site argues that code review takes a long time and slows developers down, and that stacking parallelizes development and code review so work can build on changes not yet merged. It notes that stacking manually is hard.
standardjs.com
JavaScript Standard Style is a style guide, linter, and formatter for JavaScript. It requires no configuration and can automatically format code with the standard --fix command. It is installed as a Node command line program via npm.
star-history.com
Star History is a web tool for viewing and comparing the GitHub star history graph of open source projects. The site also lists a top committers ranking and provides a Chrome extension.
stylestage.dev
Style Stage is a modern CSS showcase styled by community contributions, maintained by Stephanie Eckles of ModernCSS.dev. Contributors submit alternate stylesheets to restyle a provided base HTML page, which was created to be semantic, accessible, and free of nearly all other opinions. The project seeks to rekindle the spirit of CSS Zen Garden.
stylifyme.com
Stylify Me is an online style guide generator created to help designers quickly gain an overview of a site's style guide, including colours, fonts, sizing and spacing. It presents text colours, typography, and image dimensions.
surge.sh
Surge is a static web publishing service for front-end developers that deploys projects from the command line to a CDN. It offers free custom domain support, free SSL for surge.sh subdomains, pushState support for single page apps, custom 404.html pages, and a CLI. Projects can be deployed through build tools such as Grunt, Gulp, Git Hooks, and npm run scripts.
svgstudio.org
SVG Studio is a free, browser-based SVG animation editor with no sign-up and no telemetry. It provides a keyframe timeline, animatable position, rotation, scale and opacity properties, SVG import, easing functions, loop control and export of self-contained animated SVGs with embedded CSS keyframes.
svgfast.com
SVGFast converts PNG and JPG images into SVG vectors. It offers unlimited conversions without sign-up and free API access during the beta after signing in with Google or GitHub. The API returns optimized SVG from the same engine, with keys sent in an authentication header.
svgx.app
SVGX is a free desktop SVG icon and asset manager for Mac and Windows. It searches SVG icons across nested folders, previews and zooms files, edits markup inline, and offers dark mode. It copies markup or URL-encoded code, generates background-image CSS, previews background repeat values, and optimizes SVGs with SVGO. It includes recents, bookmarks, and export to SVG or PNG.
github.com
SwitchHosts is an open source project with code, documentation, and setup resources for network diagnostics.
tally.so
Create online forms with a browser-based form builder.
tech-blogs.dev
An index of independent tech blogs covering JavaScript, CSS, DevOps, Python and related topics, written by people who build things. The page also lists free developer tools and reading maintained by Marko Denic, including web development resources, an article banner tool, a snippet editor, code tools and a JavaScript quiz.
tekcities.com
Tekcities.com offers free web hosting alongside paid shared, semi-dedicated and VPS hosting plans. The service lists support for PHP, Perl, CGI, Python and Ruby, domain registration and transfer, SSL certificates, and a website builder. A FAQ page addresses hosting control panel and account questions.
temper.one
Temper is a tool for building a personal web page. Users enter their content and adjust colors and typography to match their style, then download a free HTML file to upload to their own hosting. It is created by Jonas Pelzer.