Different microcontrollers normally have different developing tools . For instance Arduino rely on Arduino IDE. Few more advanced users set up different graphical interfaces like Eclipse for better project management. Sometimes it may be hard to keep up with different microcontrollers and tools. You probably thought that single unified development tool could be great. Well this is what PlatformIO open source ecosystem is for.

This is cross platform code builder and library manager with platforms like Arduino or MBED support. They took care of toolchains, debuggers, frameworks that work on most popular platforms like Windows, Mac and Linux. It supports more than 200 development boards along with more than 15 development platforms and 10 frameworks.

UBports is the successor of Ubuntu touch

Portrait photos of people involved in the development of open source software.

Another pdp-11 simulator written in Javascript.

100-line Emacs Lisp program to copy passwords to clipboard and remove them after 10s from both clipboard and kill-ring.

Don’t let your friends dump git logs into CHANGELOGs™

Arguments for keeping a human-readable, high-level change log.

Specification document skeleton for a web application, incl. usage examples of various org-mode features:
       Inline, text-based diagramming via Ditaa, Graphviz & PlantUML
       Hyperlink abbreviations (incl. presets for GitHub, RFC, W3C, Wikipedia)
       Section status flags, tags & custom properties
       Tables
       Named section IDs for internal x-refs
       Footnotes
       Automatically updating fields (e.g. publication date)
       Automatic updating of document changelog (using git commits)
   Beautiful, minimal, responsive CSS theme with print support (also for PDF generation)
   Basic syntax highlighting of code blocks

youtube-dl is a command-line program to download videos from YouTube.com and a few more sites. It requires the Python interpreter (2.6, 2.7, or 3.2+), and it is not platform specific. We also provide a Windows executable that includes Python. youtube-dl should work in your Unix box, in Windows or in Mac OS X. It is released to the public domain, which means you can modify it, redistribute it or use it however you like.

Antenna analysis software NEC2 in C with GUI.
NORAD sdp4/sgp4 satellite orbit modelling software in C and Pascal.

BitKeeper is available under an Apache license. The paper is interesting also for users of other version control systems.