The Open GApps Project is an open-source effort to script the automatic generation of up-to-date Google Apps packages.
On OpenGApps.org you can find more information about the project effort and also pre-built Google Apps packages generated by the OpenGApps.org buildbot.

The linux-based open-source mobile operating system Android is not only the most popular mobile operating system in the world, it’s also on the way to becoming a proprietary operating system. How is that?

While the core operating system is still released as part of the Android Open Source Project, the majority of core apps are not. It gets worse: More and more libraries and APIs are only available on phones that run various Google apps pre-installed, effectively locking third-party apps to the Google ecosystem. For these reasons Android is described as being a “look but don’t touch” kind of open.

At this point, several popular open-source applications like the secure messenger Signal already require some of Google’s proprietary libraries to be installed. Increasing demand in the free software community in addition to severe problems in Google’s proprietary software discovered by the Android modding community, have led to the development of a free software clone of Google’s proprietary core libraries and applications - the microG Project was born.

Although most microG components are far from complete, users are amazed by the results. Free software users got extended application support, privacy-caring users can reduce or monitor data that is sent to Google and especially older phones can expect some battery life improvements. microG is not only used on real devices, but also replaces Google tools in test emulators and is even used in virtual mobile infrastructure.

Reference: THM180C4M

Condition: New product

The Bus Pirate is a troubleshooting tool that communicates between a PC and any embedded device over most standard serial protocols, which include I2C, SPI, and asynchronous serial, all at voltages from 0-5.5VDC

Bus Pirate v3 is a universal bus interface that talks to electronics from a PC serial terminal. Get to know a chip without writing code. Eliminates a ton of early prototyping effort with new or unknown chips. A laser cut acrylic case for Bus Pirate v3.6 is also available.

This board provides 1-Wire, I2C, SPI, JTAG, asynchronous serial (UART), MIDI, PC keyboard, HD44780 LCDs, and generic 2- and 3-wire libraries for custom protocols.

Once a packet arrives as a particular CloudFlare data center we want to ensure it gets to a server that can correctly handle the request. There are four key tasks that CloudFlare's servers perform: DNS, proxy, cache, and logging. We tend to follow the Google-like approach and deploy generic, white-box servers that can perform a number of different functions. (Incidentally, if anyone is interested, we're thinking of doing a blog post to "tour" a typical CloudFlare server and discuss the choices we made in working with manufacturers to design them.) Since servers can fail or be overloaded, we need to be able to route traffic intelligently around problems. For that, we return to our old friend Anycast.

BPF, as in Berkeley Packet Filter, was initially conceived in 1992 so as to provide a way to filter packets and to avoid useless packet copies from kernel to userspace. It initially consisted in a simple bytecode that is injected from userspace into the kernel, where it is checked by a verifier—to prevent kernel crashes or security issues—and attached to a socket, then run on each received packet. It was ported to Linux a couple of years later, and used for a small of applications (tcpdump for example). The simplicity of the language as well as the existence of an in-kernel Just-In-Time (JIT) compiling machine for BPF were factors for the excellent performances of this tool.

Then in 2013, Alexei Starovoitov completely reshaped it, started to add new functionalities and to improve the performances of BPF. This new version is designated as eBPF (for “extended BPF”), while the former becomes cBPF (“classic” BPF). New features such as maps and tail calls appeared. The JIT machines were rewritten. The new language is even closer to native machine language than cBPF was. And also, new attach points in the kernel have been created.

Thanks to those new hooks, eBPF programs can be designed for a variety of use cases, that divide into two fields of applications. One of them is the domain of kernel tracing and event monitoring. BPF programs can be attached to kprobes and they compare with other tracing methods, with many advantages (and sometimes some drawbacks).

The other application domain remains network programming. In addition to socket filter, eBPF programs can be attached to tc (Linux traffic control tool) ingress or egress interfaces and perform a variety of packet processing tasks, in an efficient way. This opens new perspectives in the domain.

And eBPF performances are further leveraged through the technologies developed for the IO Visor project: new hooks have also been added for XDP (“eXpress Data Path”), a new fast path recently added to the kernel. XDP works in conjunction with the Linux stack, and relies on BPF to perform very fast packet processing.

Even some projects such as P4, Open vSwitch, consider or started to approach BPF. Some others, such as CETH, Cilium, are entirely based on it. BPF is buzzing, so we can expect a lot of tools and projects to orbit around it soon…

Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as necessary. It’s the “Command Line Interface Creation Kit”. It’s highly configurable but comes with sensible defaults out of the box.

It aims to make the process of writing command line tools quick and fun while also preventing any frustration caused by the inability to implement an intended CLI API.

Click in three points:

arbitrary nesting of commands
automatic help page generation
supports lazy loading of subcommands at runtime

Anchor is an ephemeral PKI service that, based on certain conditions, automates the verification of CSRs and signs certificates for clients. The validity period can be set in the config file with hour resolution.

OwnTracks allows you to keep track of your own location. You can build your private location diary or share it with your family and friends. OwnTracks is open-source and uses open protocols for communication so you can be sure your data stays secure and private.

Chisel is an open-source hardware construction language developed at UC Berkeley that supports advanced hardware design using highly parameterized generators and layered domain-specific hardware languages.

Hardware construction language (not C to Gates)
Embedded in the Scala programming language
Algebraic construction and wiring
Abstract data types and interfaces
Bulk connections
Hierarchical + object oriented + functional construction
Highly parameterizable using metaprogramming in Scala

Supports layering of domain specific languages
Sizeable standard library including floating-point units
Multiple clock domains
Generates low-level Verilog designed to pass on to standard ASIC or FPGA tools
Open source on github with modified BSD license
Complete set of docs
Growing community of adopters