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Bytecode Viewer is a Java reverse engineering suite with a GUI that includes Java and APK decompilers, bytecode editors and a compiler. It supports loading classes, jars and Android APKs, and is released as free and open source under GPL v3.
Caddy is an open source web server written in Go that automatically obtains and renews TLS certificates for sites. It includes a JSON configuration with an on-line config API, a static file server, and an HTTP reverse proxy, and can coordinate certificate management across multiple instances sharing storage.
CasaOS is an open-source personal cloud system built around the Docker ecosystem. It offers a dashboard, a command-line interface, and pre-installed Docker apps alongside community-verified self-hosted apps. It runs on hardware including ZimaBoard, Intel NUC, and Raspberry Pi, and supports Ubuntu, Debian, Raspberry Pi OS, and CentOS through a one-line installation.
Chaos Frontend Toolkit is a browser extension bundling tools intended to break web apps so developers can find ways to improve them, applying chaos engineering principles to the frontend. It covers areas such as network, timers, history, accessibility, localization and inputs, and is available on Chrome, Firefox and Edge as an open-source GPLv3 project.
A site offering non-judgmental guidance on choosing a license for an open source project. It presents situations such as needing to work in a community, wanting something simple and permissive, or caring about sharing improvements, and points to licenses like the MIT License and GNU GPLv3. It also addresses non-software projects and not choosing a license.
Curated list of classless CSS themes and frameworks for styling semantic HTML quickly.
cloudflare speed cli is a command-line tool for running internet speed tests and checking connection performance.
Color Oracle is a free color blindness simulator for Windows, Mac and Linux that applies a full screen color filter to show what people with common color vision impairments see. The software is open source and version 1.3 was released in 2018.
CudaText is a cross-platform text editor written in Object Pascal. It is an open source project that can be used free of charge, including for business. It offers syntax highlighting for over 300 lexers, code tree, code folding, multi-carets, regular expression find and replace, tabbed UI, and split views, and is extensible through Python add-ons.
curl is a command-line tool and library for transferring data with URLs. It is used in command lines or scripts to transfer data, and libcurl serves as an Internet transfer engine in numerous software applications and devices. It supports many protocols, including HTTP, HTTPS, FTP, SMTP and IMAP. curl is free and open source software with thousands of contributors and sponsors.
DB Browser for SQLite is a visual, open source tool for creating, searching, and editing SQLite or SQLCipher database files. It offers a spreadsheet-like interface alongside full SQL query facilities and works on Windows, macOS, and most versions of Linux and Unix.
DBeaver Community is a free, open-source database management tool for relational databases such as MySQL, MariaDB, PostgreSQL, SQLite and Apache Family. It includes a data editor, SQL editor, task management and database maintenance tools, plus AI Chat and an @ai command. A separate commercial DBeaver PRO version adds advanced features.
DevToys is a cross-platform desktop application for developer tasks such as formatting JSON, comparing text and testing regular expressions. It is free and open source on Windows, macOS and Linux, with 30 default offline tools and extensibility.
Dozzle is a lightweight, open-source log viewer for Docker, Swarm, and Kubernetes. It streams container logs in real time and allows searching, filtering by level or time range, and querying JSON fields with SQL from the browser.
DuckDB is an open-source SQL OLAP database management system. It is an analytical database that runs in-process and can be deployed from edge devices to servers with hundreds of cores. It offers idiomatic APIs for major programming languages and reads and writes formats such as CSV, JSON, Parquet, and Iceberg, locally or in object storage.
Easing Functions Cheat Sheet is an open-source page that helps developers select easing functions to make CSS animations more natural. It lists named easing functions and shows implementations for CSS, PostCSS, gradients and a TypeScript math function.
Easypanel is a self-hosted platform as a service for deploying applications and open-source services on a server. It provides continuous deployment, SSL, monitoring, logs and databases. It installs on a fresh Ubuntu server with at least 2 GB of RAM. A free plan covers up to three projects.
Etebase is an open-source, end-to-end encrypted SDK and backend for building encrypted applications. It provides client libraries and a server, offering an API so developers can encrypt and upload data. Optional features include revision history, sharing among users, and integrity protections. Users can run their own server.
Float UI provides responsive website templates and UI components for React, Vue, Svelte and HTML built with Tailwind CSS. It describes the components as free and open-source and as copy-and-paste ready, alongside professional templates built on React and Next.js with Tailwind CSS.
Floatui is a frontend design resource for CSS frameworks, UI components, and web interfaces.
For the Badge creates custom SVG badges for projects. It offers a visual generator for badge design and a REST API that returns badges via query parameters. The project is open source, and badges can be exported as SVG or copied as markdown for use in READMEs.
Franchise is an open-source SQL notebook for desktop. It runs a version of the SQLite engine in the browser, so processing happens locally, and users can load CSV, JSON, or XLSX files by dropping them in. A terminal command sets up a database bridge for connecting to PostgreSQL, MySQL, or BigQuery. Published notebooks can be downloaded as HTML documents.
Free Domain is a storage, design, or frontend resource for mockups, assets, UI tools, or web search.
Gitea is a self-hosted software development service that includes Git hosting, code review, team collaboration, package registry and CI/CD. It offers Gitea Actions, a built-in CI/CD system compatible with GitHub Actions, and runs on Linux, Windows, macOS, FreeBSD and Kubernetes. An open source version is free under the MIT license, while an enterprise plan requires a one-year commitment.
