File Types

A smart contract language designed for safe resource management on blockchains (Aptos, Sui). Features linear types to prevent asset duplication.

A logic-less template syntax available in many programming languages. Mustache uses {{tags}} for variable interpolation and is the basis for Handlebars.

A line-based, plain text format for encoding RDF triples. Simpler than Turtle but more verbose, designed for streaming and easy parsing.

Network Database: a general term for network-model database files. Also refers to MySQL NDB Cluster data storage files.

Nikon Electronic Format: Nikon's proprietary RAW image format containing unprocessed sensor data with full metadata.

Info File: a plain text file containing information or metadata about associated files.

Neuroimaging Informatics Technology Initiative: a file format for neuroimaging data (fMRI, structural MRI). Standard in brain imaging research.

The manifest file for Node.js projects, defining dependencies, scripts, metadata, and configuration for the npm/yarn/pnpm package managers.

Nero Burning ROM Image: a proprietary disc image format created by Nero AG for CD/DVD burning software.

NES Sound Format: a file format for music from Nintendo Entertainment System games, containing the game's sound program code.

Network Common Data Form: a self-describing, machine-independent format for array-oriented scientific data. Standard in climate, oceanography, and atmospheric science.

Configuration files for Nginx, a high-performance web server and reverse proxy. Uses a block-based directive syntax for server and location rules.

Source code for Nim, a statically typed compiled language combining Python-like syntax with C-level performance. It compiles to C, C++, or JavaScript.

Configuration files for the Nix package manager and NixOS, using a functional expression language for reproducible builds and system configuration.

Apple Numbers Spreadsheet: the native spreadsheet format for Apple's Numbers application. It supports charts, formulas, and rich formatting within the iWork ecosystem.

A rich and powerful templating engine for JavaScript by Mozilla, inspired by Jinja2. Used in static site generators like Eleventy and Node.js web applications.

Wavefront OBJ: a simple, open geometry definition file format. It represents 3D geometry with vertices, normals, texture coordinates, and faces.

OLE Control Extension: a Windows ActiveX/OLE control component providing reusable UI elements for Visual Basic and other Windows applications.

Source code for OCaml, a multi-paradigm language with a powerful type system. Used in formal verification, compilers, and financial systems.

OpenDocument Formula: an open standard format for mathematical formulas within the OpenDocument family, used by LibreOffice Math.