Developer Tools

A free Windows programmer’s editor with project workspaces, macros, FTP, HTML preview and a hex editor.

Use an open-source IDE in a browser or on desktop, with an extension model based on Open VSX.

Emulate complete machines or run programs built for another Linux or BSD architecture.

Build reproducible software environments and run packages temporarily with a functional package manager.

Build and debug .NET or game projects in a cross-platform IDE with code analysis and refactoring.

Search Crossref’s deposited scholarly metadata and retrieve records by DOI or other publication identifiers.

Display system and hardware information in a customizable terminal summary.

Compare synthetic browser checks with real-user performance and alert on regressions.

Store and retrieve large-scale data with Apache's distributed, column-oriented Hadoop database.

Edit, validate, transform, and publish XML in text and visual authoring modes.

Observability and conversation analytics for LLM-powered chat applications.

Trace server-side requests to find slow methods, database queries, and external service calls.

Create a cloud development environment for a repository and edit it in a browser-based VS Code workspace.

A self-managed engine for full-text search, indexing, and analytics.

Generate API checks from OpenAPI or GraphQL schemas and exercise real endpoints with varied inputs.

Build desktop applications with JavaScript, HTML, and CSS using a Chromium and Node.js runtime.

A project-based IDE for writing and running R-centered data work, with support for Python scripts and documents.

Aggregate log streams by labels and query their contents through Grafana Loki.

Bring manual cases, exploratory sessions and automated test results into one QA workspace.

Generate typed accessors for compact serialized data that applications can read directly from a buffer.

Run free, open-source CI/CD pipelines with containerized workflow steps.

Manage test cases, suites and releases with AI-assisted authoring and CI integrations.

Query Twitch stream, channel, user, game, and related platform data through Helix endpoints.

Run event handlers, HTTP workloads, or isolated compute without managing servers.