qpdf: A content-preserving PDF document transformer

GDAL is an open source X/MIT licensed translator library for raster and vector geospatial data formats.

🐫 The Perl programming language

The next-generation couch surfing platform. Free forever. Community‑led. Non‑profit. Modern. Chuck us a star :)

The user manual for Overpass API

The Rails application that powers OpenStreetMap

GPSBabel: convert, manipulate, and transfer data from GPS programs or GPS receivers. Open Source and supported on MacOS, Windows, Linux, and more. Pointy clicky GUI or a command line version...

PROJ - Cartographic Projections and Coordinate Transformations Library

Viking is a free/open source program to manage GPS data (including GPX and KML files). You can import and plot tracks, routes and waypoints, show OpenStreetMaps (OSM), Bing Aerial and other maps, g…

Programmable completion functions for bash

Utility to execute a command as another user

The XML-LibXML CPAN Distribution for Processing XML using the libxml2 library

Universal markup converter

Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.

The official UGRC website

Sublime and Sphinx Guide

Aegis compatible OTP generator for the CLI

The OpenCellID and MLS contributor's app.

Email-based instant messaging for Android.

Delta Chat Website

The task switcher for minimalistic window managers or standalone X11 session

Sky Cultures for Stellarium

Translate from Perl's Pod doc format to other formats

The Generic Mapping Tools

Reference implementation of OGC KML 2.2

The source code that powers readthedocs.org

Parsing HTML at the command line

Less - text pager

trurl is a command line tool for URL parsing and manipulation.

QGIS Documentation