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Devhints is a collection of web development cheatsheets covering topics such as JavaScript, CSS, Git, Docker, and various command line tools. Each sheet is a one-page quick reference with usage examples, links, and snippets. The site also includes guidance on writing cheatsheets and on writing Vim help files.
Difftastic is an MIT-licensed command-line diff tool that compares files by syntax rather than line-by-line, parsing code with tree-sitter. It is intended to produce diffs that are easier for humans to read, showing real line numbers and handling formatting and wrapping changes. It supports many programming languages and file formats and can be configured for use with Git.
Discord.js Guide is a developer community or publication for programming discussions, news, tutorials, and help.
A real-time internal combustion engine simulation designed to produce engine audio and simulate engine response characteristics. It is not a scientific tool and is not expected to provide accurate figures for engineering or engine tuning. A downloadable build is offered from the site.
HN Popularity is a developer resource for coding, documentation, communities, security research, or software tools.
Packet Sender is a free, open source utility for sending and receiving network packets, with support for TCP, UDP, SSL and DTLS. It includes a built-in HTTP client for GET/POST requests, panel generation, a command line interface for scripting, and runs on Windows, Mac and Linux.
Portainer is a platform for deploying, running, securing, and governing Kubernetes across a fleet from a single control plane. It provides multi-cluster fleet management, GitOps deployment workflows, self-service with guardrails, and enterprise identity and access. Docker, Swarm, and Podman hosts join the same console. Portainer Business Edition is free for 3 nodes and includes RBAC, GitOps, fleet governance, and audit logs.
Sshx is a GitHub repository or organization with source code, releases, documentation, or project resources.
x10hosting is a free web hosting service built on a cloud platform. It offers a site builder with over 150 templates and more than 300 one-click software installers. Free signups are currently unavailable due to scheduled maintenance, and low cost premium hosting is offered instead.
8b is a developer resource for coding, documentation, communities, security research, or software tools.
ChartDB is a developer resource for coding, documentation, communities, security research, or software tools.
Check for Cloudflare is a developer resource for coding, documentation, communities, security research, or software tools.
CoderPad helps developers write, search, review, test, or manage code and projects.
Dashy is a Linux, macOS, BSD, or Unix resource for tools, documentation, communities, or system workflows.
Devina.io is an online development toolkit offering advanced tools for developers, designers and content editors. It lists 78 tools grouped into categories such as general, data, media, networking and website utilities, including a text diff viewer, JSON viewer and PDF transformer. The PDF transformer is a QPDF GUI for content-preserving transformations including linearization and encryption.
Drift is a self-hostable clone of GitHub Gist that provides a simple way to save and share code and text snippets. It supports rendering GitHub Extended Markdown, user authentication, private, public and password protected posts, syntax highlighting and language detection, and drag-and-drop file uploading.
EnginesDatabase is a developer resource for coding, documentation, communities, security research, or software tools.
Onelang is a browser-based IDE for cross-language editing, exposed through a web interface. The page notes that unsupported browsers may not work and recommends the latest Chrome or Firefox. It offers demos covering generic features, reflection, inheritance, big integers, JSON handling and Hello world, and states that the compiler backend requires authentication.
ping.pe helps test latency, packet loss, routing paths, and network reachability.
Termible is a subscription service for embedding an actual Linux terminal into a website, letting visitors try a CLI tool, REST API or programming language without installation. It launches Docker-powered containers as users connect, and supports executable code examples, embedded terminals and session recording. The service is in private beta, and plans list free, startup and enterprise tiers with concurrent terminal limits.
VHS is a GitHub repository or organization with source code, releases, documentation, or project resources.
Developer forum for Android devices, custom ROMs, mobile software, and device troubleshooting.
A11ygator is a developer resource for coding, documentation, communities, security research, or software tools.
Eclipse Adoptium provides prebuilt OpenJDK binaries built from open source build scripts and infrastructure. Its Temurin distribution is an OpenJDK-based Java runtime offered as a free download, with documentation covering installation, migration, supported platforms and container images. Adoptium also publishes build and test infrastructure artifacts and quality assurance tests.
