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Azure Data Explorer is a fully managed cloud data analytics service for real-time analysis of large data volumes streaming from applications, websites, and IoT devices. It is used to collect, store, and analyze diverse data, and supports querying with Kusto Query Language, T-SQL, and Python.
Better Auth is a framework-agnostic authentication and authorization framework for TypeScript. It provides built-in email and password authentication, account and session management, social sign-on, two-factor authentication, and a rate limiter, and can be extended with plugins for features such as passkeys and multi-tenancy. It supports most popular frameworks and requires a database, such as SQLite, PostgreSQL, or MySQL, to store user data.
GoalKicker.com hosts free programming Notes for Professionals books spanning languages and tools such as C, C#, Java, JavaScript, Python, PHP and SQL Server. The site lists titles on Android, HTML5, Git and Linux, and states that books are updated weekly.
CARS is the first data release of the Close AGN Reference Survey, a spatially resolved multi-wavelength survey of about 39 nearby luminous AGN and 2 starburst galaxies. It provides 3D cubes and high-level data products from optical IFU spectroscopy. All data is publicly available; registration offers a dedicated SQL workspace.
CosmoSim is a database providing results from cosmological simulations performed within the MultiDark and Bolshoi projects and Galaxies. It reports dark matter simulations of the universe and galaxy catalogs for the MDPL2 simulation. The database can be queried by entering SQL statements directly into a query interface or through scripted access; registration provides full access.
CS Demo Manager is an application for managing Counter-Strike demo replays. It provides statistics extraction, grenade finding, heatmap generation and export, VAC ban tracking, video generation, demo downloading, searching for notable events, and export to XLSX or JSON files or via SQL.
CS50 is Harvard University's introduction to computer science and programming, intended for students with or without prior experience. It covers computational thinking, abstraction, algorithms and data structures, and programming in C, then Python, and later SQL, HTML, CSS and JavaScript, ending with a final project. The material is available free online through OpenCourseWare over eleven weeks.
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.
Discord History Tracker is a desktop app that saves chat history from Discord servers, groups and private conversations for offline viewing. It stores messages in a local SQLite database and uses a tracking script that sends messages to the app. A viewer supports filters for viewing portions of saved messages.
Docker Mailserver is a self-hosted mail server provided as a Docker image, supporting SMTP, IMAP, LDAP, anti-spam, and anti-virus. It uses configuration files instead of an SQL database and includes a setup.sh script for configuration and administration.
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.
Apache Flink is a distributed data processing engine for stateful computations over data streams. It offers exactly-once state consistency, event-time processing, layered APIs including SQL on stream and batch data, and flexible deployment with savepoints. Its stated use cases include event-driven applications, stream and batch analytics, and data pipelines and ETL.
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.
Dnote is a command-line notebook that stores notes in a SQLite file and provides full-text search. It ships as a single binary without dependencies, works with the user's own text editor, and is free and open source. An optional self-hosted server with a REST API enables syncing notes across devices.
GoalKicker hosts a collection of free programming books titled Programming Notes for Professionals, covering topics such as Android, C, C#, CSS, HTML5, iOS, Java, JavaScript, PHP, Python and SQL Server. The site states the books are updated weekly and that GoalKicker was acquired in June 2023.
GritQL is a declarative query language from Grit for searching and modifying source code. It lets users search with code snippets and metavariables, define custom lints, and apply auto-fix rules, and it supports rewriting JavaScript/TypeScript, Python, JSON, Java, Terraform, Solidity, CSS, Markdown, YAML, Rust, Go and SQL.
Kener is a free, open-source status page and uptime monitor that can be self-hosted with Docker. It monitors API, Ping, TCP, DNS, SSL, SQL, Heartbeat, GameDig, and gRPC services with configurable check intervals and thresholds, and it provides incident management, maintenance scheduling, notifications, embeddable widgets, and a REST API.
Kismet is a sniffer, WIDS, and wardriving tool for Wi-Fi, Bluetooth, Zigbee, RF, and more, running on Linux and macOS. It provides distributed capture over TCP sockets or websockets, a unified kismetdb logfile based on sqlite3, and a REST-like API for its embedded webserver.
linkding is a self-hosted bookmarking service described as minimal, fast and easy to set up. It can fetch website metadata, create archived snapshots and apply bulk editing, and it supports multiple users. It runs as a single Docker container using SQLite, with browser extensions for Firefox and Chrome and a REST API.
MinusX is an open source agentic business intelligence platform that combines a data agent with a BI tool. It answers questions, builds dashboards and sets alerts, with slides and data stories, visualizations and a SQL GUI. It can be self-hosted or used via MinusX Cloud, and the source is available and inspectable.
The MultiDark Database provided results from cosmological simulations performed within the MultiDark project. It could be queried by entering SQL statements directly into a Query Form, and access to the public and private databases was password protected, requiring registration. The site notes that MultiDark has moved to CosmoSim, where its application is integrated, and the old server is no longer available.
Nushell is a cross-platform shell that works on Linux, macOS, BSD, and Windows. Its pipelines use structured data, and it reads formats including JSON, YAML, SQLite, and Excel. It operates on typed data and offers a plugin system for extension. Nushell is available as downloadable binaries, through package managers, in a GitHub Action, and as source code.
