Merge pull request #458 from datensen/master

add Perseid Modeler

Author: Relequestual

implementations.md

@@ -272,6 +272,7 @@ the utility, and decided on a case-by-case basis.
 -   [JSONEditor Online](https://jsoneditoronline.org/) - *View, edit, format, and validate JSON online* Support draft-4, draft-6, and draft-7.
 -   [Liquid JSON Schema Editor](https://www.liquid-technologies.com/json-schema-editor) - *Graphical JSON Schema editor for draft-04, draft-06, draft-07 and 2019-09, with split source code and grphical editing. Includes validation of JSON files based on JSON Schema, JSON Sample Generator and JSON Schema Documentation Generator.*
 -   [Oxygen JSON Editor](https://www.oxygenxml.com/xml_editor/json.html) - *JSON editor with a variety of editing features and helper views. Support for validation and editing JSON Schema draft-4, draft-6, and draft-7. Validation and editing of JSON files based on JSON Schema.*
+-   [Perseid Modeler](https://www.datensen.com/data-modeling/perseid-modeler-for-json-schema.html) - *a modeling tool for JSON Schema and OpenAPI. Key features include: visual JSON schema creation using tree and ERD-like diagrams, support for JSON schema structures including operators and conditions, import of existing schemas from files, creation of detailed HTML reports, export to PDF, script generation, and more. Supported versions: draft 4, 6, 7, 2019-09 and 2020-12*
 -   [Stoplight Studio](https://stoplight.io/) - *JSON Schema IDE (text-based and GUI) with support for JSON/YAML linting, which can also be based on JSON Schema rules via Spectral. Support for draft-4, draft-6 and draft-7.*
 -   [Visual Studio Code](https://code.visualstudio.com/) - *Schema driven code completion, hovers and validation for editing JSON files (including schemas)*
 -   [WebStorm](https://www.jetbrains.com/webstorm/), [IntelliJ IDEA](https://www.jetbrains.com/idea/), and other [JetBrains IDEs](https://www.jetbrains.com/products.html?fromMenu#type=ide) - *Code completion, documentation, and validation for JSON and YAML files using JSON Schema. Support for draft-4, draft-6, and draft-7.*