SQL

Search and compare programming languages in Codigo, a directory that also publishes language news and examples.

LanceDB provides an embedded retrieval library for multimodal AI applications.

SQL Police Department teaches SQL through online crime-solving missions that require building queries and reviewing results.

GPTBots.ai implements enterprise AI agents for customer support, enterprise search, and data analysis workflows.

ExampleFile provides sample files for testing, including PDF, image, ZIP, MP4, DOCX, JSON, and other formats.

cfrelay runs a Nostr relay on Cloudflare Workers and supports the basic NIP-01 protocol.

pastemyst stores and shares text and code snippets, with paste expiration and file-drop support.

CS Demo Manager organizes Counter-Strike replays and can extract statistics from demo files.

Browse components that extend foobar2000 with additional features through the Components Repository.

OneCompiler lets users write, run, and share code online in more than 110 programming languages.

Sourcecodester publishes free source code projects and tutorials in programming languages including Python, PHP, and Java.

Codepip offers coding games for practicing HTML, CSS, JavaScript, and SQL, including Flexbox Froggy and Grid Garden.

The Medical Data Models portal supports creating, sharing, reusing, and exporting standardized forms for academic medical research.

OpenCVE tracks vulnerabilities, vendors, products, and weaknesses through searchable security records.

OpenCodeReview combines deterministic checks and language model agents for code review with line-level comments.

CARS shares data from the first release of the Close AGN Reference Survey, a spatial survey of active galaxies.

Explore GMDprivateServer, a community server project for Geometry Dash.

Build applications on Gel, an open-source database with a data model, graph queries, authentication, and AI features.

The Mitelman Database links chromosome changes and gene fusions with tumor characteristics and supports gene and cancer searches.

LaraJobs is the official Laravel job board, with listings for jobs and consultants and options to post a role or hire developers.

Search AI application data with Infinity, a database supporting vectors, tensors, and full-text queries.

SQLBolt offers interactive SQL lessons and exercises for learning database queries.

DBeaver Community manages and queries databases with a free, open-source application.

Lowdefy builds full-stack web apps from YAML configuration and connects them to data sources.