Tikka - A content analysis toolkit

•    Java

Apache Tika is a toolkit for detecting and extracting metadata and structured text content from various documents using existing parser libraries.

ms - Tiny milisecond conversion utility

•    Javascript

Use this package to easily convert various time formats to milliseconds.

OpenCC - A project for conversion between Traditional and Simplified Chinese

•    C++

Open Chinese Convert (OpenCC, 開放中文轉換) is an opensource project for conversion between Traditional Chinese and Simplified Chinese, supporting character-level conversion, phrase-level conversion, variant conversion and regional idioms among Mainland China, Taiwan and Hong kong.

Translate - Essential Toolkit for Localization Engineers.

•    Python

At its core the software contains a set of classes for handling various localization storage formats: DTD, properties, OpenOffice.org GSI/SDF, CSV, MO, Qt .ts, TMX, TBX, WordFast txt, Gettext .mo, Windows RC, and of course PO and XLIFF. It also provides scripts to convert between these formats.

elasticsearch-analysis-pinyin - This Pinyin Analysis plugin is used to do conversion between Chinese characters and Pinyin

•    Java

Pinyin Analysis for Elasticsearch

mpegts - Javascript HTTP Live Streaming realtime converter and player

•    Javascript

This is Apple HTTP Live Streaming JavaScript player created by performing realtime conversion of MPEG-TS video chunks to MPEG-4 in separate thread using Web Worker and playing them in order in main thread. Conversion is done using jBinary binary manipulation library with programmatically described data structures according to ISO 13818-1, ISO-14496-2, ISO-14496-12 and ITU-T H.222.0 specifications.

structured-text-tools - A list of command line tools for manipulating structured text data

The following is a list of text-based file formats and command line tools for manipulating each. Delimiter-separated values, including CSV, TSV, etc.

UPNG.js - Fast and advanced PNG (APNG) decoder and encoder (lossy / lossless)

•    Javascript

A small, fast and advanced PNG / APNG encoder and decoder. It is the main PNG engine for Photopea image editor. UPNG.js supports APNG and the interface expects "frames". Regular PNG is just a single-frame animation (single-item array).

ms - Tiny millisecond conversion utility

•    Javascript

Use this package to easily convert various time formats to milliseconds.

pngquant - Command-line utility and a library for lossy compression of PNG images

•    C

pngquant is a PNG compressor that significantly reduces file sizes by converting images to a more efficient 8-bit PNG format with alpha channel (often 60-80% smaller than 24/32-bit PNG files). Compressed images are fully standards-compliant and are supported by all web browsers and operating systems.

newforms - Isomorphic form-handling for React

•    Javascript

An isomorphic form-handling library for React. Newforms can be used on the server, or bundled for the client using an npm-compatible packaging system such as Browserify or webpack.

money.js - money.js is a tiny (1kb) javascript currency conversion library, for web & nodeJS

•    Javascript

Simple and tiny JavaScript library for realtime currency conversion and exchange rate calculation, from any currency, to any currency.money.js is lightweight, has no dependencies, and works great client-side or server-side. Use standalone or as a nodeJS/npm and AMD/requireJS module.

one-color - An OO-based JavaScript color parser/computation toolkit with support for RGB, HSV, HSL, CMYK, and alpha channels

•    Javascript

Javascript color object with implicit color space conversions. Supports RGB, HSV, HSL and CMYK with alpha channel.

docconv - Converts PDF, DOC, DOCX, XML, HTML, RTF, etc to plain text

•    Go

A Go wrapper library to convert PDF, DOC, DOCX, XML, HTML, RTF, ODT, Pages documents and images (see optional dependencies below) to plain text. Note for returning users: the Go code path for this pkg been moved to code.sajari.com/docconv. Follow the installation instructions to checkout a version of the code in the correct place.

UnitsNet - Makes life working with units of measurement just a little bit better.

•    CSharp

Everyone have written their share of trivial conversions - or less obvious ones where you need to Google that magic constant. Stop littering your code with unnecessary calculations, Units.NET gives you all the common units of measurement and the conversions between them. It is lightweight and thoroughly tested.

moment-jalaali - A Jalaali (Jalali, Persian, Khorshidi, Shamsi) calendar system plugin for moment

•    Javascript

A Jalaali (Jalali, Persian, Khorshidi, Shamsi) calendar system plugin for moment.js. Jalali calendar is a solar calendar that was used in Persia, variants of which today are still in use in Iran as well as Afghanistan. Read more on Wikipedia or see Calendar Converter.

Media Converter.NET

Media Converter.NET makes is easier for every one to convert most media files to other formats. You'll never have to use the command line to convert using FFmpeg, because Media Converter.NET is a FFmpeg GUI. Media Converter.NET is developed in Visual Basic .NET.

Xml To Csv Conversion Tool

This project contains an API that you can use to convert data stored in XML to comma seperated values (csv). There is also a Windows Form client application included. It is programmed in C#4.0.

GeoUtility Library

GeoUtility is an easy to use coordinate conversion library. It can be used for desktop/web development in CLI implementations like .NET, MONO. Supported coordinate systems: Lon/Lat, Gauss-Krueger, UTM, MGRS/UTMREF. Supported map services: Google Maps, Virtual Earth, Yahoo Maps.

iConv: Easily convert video files to your iPad, iPhone or iPod

Simple UI conversion tool with drag-and-drop functionality. This video converter supports wmv, avi, mpeg/mpg and rmvb saving to iPod, iPhone and iPad frendly formats. Batch convert folders of movies or tv episodes easily.