Found via computable-reals https://github.com/tarballs-are-good/computable-reals, but others such as Quickproject https://github.com/tarballs-are-good/quickproject are interesting as well.

NeoPG is a modern replacement for GnuPG 2
NeoPG starts as an opinonated fork of GnuPG 2 to clean up the code and make it easier to develop.
We want to provide a stable and extensible API for application developers, too.
Eventually, we will add new ways to use OpenPGP that make it accessible and usable.

Small as a mouse, fast as a cheetah and available for free. NetSurf is a multi-platform web browser for RISC OS, UNIX-like platforms (including Linux), Mac OS X, and more.

NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 32-bit microcontroller environments, the primary governing standards in NuttX are Posix and ANSI standards. Additional standard APIs from Unix and other common RTOS's (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

Exploring precision GPS/GNSS with RTKLIB open source software and low-cost u-blox GPS receivers.
This particular post links to the announcement of the u-blox ZED-F9P high precision GNSS module
https://www.u-blox.com/en/product/zed-f9p-module
According to https://forum.u-blox.com/index.php/18878/when-can-i-get-a-zed-f9p
"I contacted u-blox and they said that the evaluation kits will be available at the end of Nov 2018."

64-bit Windows build of Emacs 26.0.91. DLLs included.
Patched with ImageMagick 7 support. Binaries and libs included.
PDF-TOOLS (epdfinfo.exe) included.
Features[1]: "XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS MODULES THREADS LCMS2"
Optimized clean build. Options[2]: "--without-compress-install --without-dbus --with-modules 'CFLAGS= -O2 -pipe -g3'"

Built and tested on a clean Windows 10 system.
addpm modified to not create/update any registry HOME entries. It only creates shortcuts as it should.

Blog mostly about the network time protocol (NTP).

Emacs-like editor running in the web browser.

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