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Fetch free latest or historical exchange-rate data from a public REST API without an API key.

Design OpenAPI descriptions, create API documentation and validate designs in a visual workspace.

Query a scholarly research graph of works, authors, sources, institutions, and related entities over a REST API.

A Windows text and code editor with CSV tools, search, and support for very large files.

A free prompt library with folders, tags, variables and version history.

Review and edit a table before exporting another format

Convert and transform structured data with visible intermediate steps

Create, manage, and publish structured technical publications from engineering content.

Document processing that turns files and web pages into Markdown or structured JSON for AI systems.

Publish XML and HTML documents using XSL-FO or CSS

Build JSON-LD entities and connect their properties through nested schema types.

Turn addresses into coordinates, or coordinates into place details, through a REST API.

Convert tables and JSON with explicit parsing controls

Repair and modernize HTML or XML through a console tool

Run command-line or Node.js accessibility checks against web pages and local HTML.

Inspect web-server traffic in a terminal or generate a live HTML report from access logs.

Compare text, structured files and Word documents

Convert structured data among common text representations

Query and convert structured files with one CLI syntax

Save notes, links, and images as cards and revisit them through search and reflective prompts.

Merge JSON data into document templates and convert the output

Turn reusable HTML or visual templates and JSON data into generated PDF documents.

Keep rich-text or code notes in a hierarchical tree stored in a single database or file collection.

Generate API and project documentation from annotated source code.