Nacapi - Turn your JSON into a restful API
Modern CSV - A CSV editor/viewer
JsonAPI - Application and Data, Languages & Frameworks, and Query Languages
ReCsvEditor - Csv / Tsv / Delimited file editor. Supports for very large Files.
ReqRes - A hosted REST-API ready to respond to your AJAX requests.
Rons CSV Editor - Rons CSV Editor / Now Rons Data Edit