Your PasswordCard
A PasswordCard is a credit card-sized card you keep in your wallet, which lets you pick very secure passwords for all your websites, without having to remember them! You just keep them with you, and even if your wallet does get stolen, the thief will still not know your actual passwords.
14 days ago
Krita | Digital Painting. Creative Freedom.
Krita is a professional FREE and open source painting program. It is made by artists that want to see affordable art tools for everyone.
graphics  opensource  software  painting  wacom 
16 days ago
SOGo: Open Source Groupware
Share your calendars, address books and mails in your community with a completely free and open source solution.
server  calendar  contacts  opensource 
24 days ago
The Hitchhiker’s Guide to Python! — The Hitchhiker's Guide to Python
This handcrafted guide exists to provide both novice and expert Python developers a best practice handbook to the installation, configuration, and usage of Python on a daily basis.

This guide is opinionated in a way that is almost, but not quite, entirely unlike Python’s official documentation. You won’t find a list of every Python web framework available here. Rather, you’ll find a nice concise list of highly recommended options.
Python  python3 
27 days ago
Security/Guidelines/OpenSSH - MozillaWiki
The goal of this document is to help operational teams with the configuration of OpenSSH server and client. All Mozilla sites and deployment should follow the recommendations below.
howto  ssh 
9 weeks ago
Static HTML Crypto
Password protect a static HTML page.

Based on the crypto-js library, StatiCrypt uses AES-256 to encrypt your string with your passphrase in your browser (client side).
tools  website  encryption 
9 weeks ago
Github - m42e/ttrss_plugin-feediron

This is a plugin for Tiny Tiny RSS (tt-rss). It allows you to replace an article's contents by the contents of an element on the linked URL's page, i.e. create a "full feed".
RSS  ttrss  plugin 
10 weeks ago
ome useful websites for programmers.

When learning CS there are some useful sites you must know to get always informed in order to do your technologies eve and learn new things. Here is a non exhaustive list of some sites you should visit, this list will get updated as soon as I can get another link, but you can also contribute by adding those you know 😉
programming  website 
10 weeks ago
Monica - a CRM for your friends and family
You know all those birthdays you forget? And when you last called your grandmother? When you last had coffee with that ex-colleague? Who did you lend that book to again?
family  opensource  server 
10 weeks ago
What Works, What Doesn't - What_works,_What_doesn't.pdf
Some study techniques accelerate learning, whereas
others are just a waste of time — but which ones are
which? An unprecedented review maps out the best
pathways to knowledge
study  education 
11 weeks ago
Making reliable distributed systems in the presence of software errors
pdf  erlang  software 
12 weeks ago
Level up your programming skills

Download and solve practice problems in over 30 different languages.

Submit the solution to the site for feedback (beta).

For code newbies and experienced programmers.
programming  learning 
12 weeks ago
A comparison between some VPS providers
server  Linux 
may 2017
A distraction-free Markdown editor for Windows and Linux.
markdown  tools  editor 
april 2017
VHDL-tool is a VHDL syntax checking, type checking and linting tool. It is also a language server for VHDL, making IDE features such as finding definitions, references and autocompletion available within editors that support the Language Server Protocol.
vhdl  work  vim  editor  Linux  lint 
april 2017
Building a NAS
I’ve been fascinated by high-volume, fault-tolerant data storage systems for a long time. I started my data storage setup in earnest with a 4-disk RAID 5 array on an ARC-1210 controller installed in my daily-driver Windows desktop. When that array inevitably filled up, I added another array on a second ARC-1210. That slowly filled up, too, and I knew I couldn’t just keep stuffing RAID cards in my desktop; I had to build a serious file storage server eventually.

I considered many different storage options and configurations, including a large hardware-controlled RAID system on a Windows or Linux environment, a software-controlled array in a Windows-based server, a Drobo-type “keep it simple, stupid” system, and continuing to simply add more drives to my desktop computer. None of these options seemed to address all my requirements very well. I eventually stumbled upon FreeNAS, a FreeBSD-based, network storage oriented operating system that uses the ZFS file system and a web interface to configure network sharing and other settings. While most of the setup and system management is done through this web interface, but you can extend the machine’s capabilities quite a bit through the terminal via SSH. In this article, I’ll go over my hardware selections, the build and configuration process, some of the other applications I have running on the machine, and a bit of theory about how ZFS allocates array storage space and how it can be tuned to reduce allocation overhead.
NAS  server  FreeNAS 
april 2017
A Review of Modern Sail Theory (1981) [pdf] | Hacker News
Bruce Banks and Dick Kenny in their book “Looking at
Sails” (Reference 1) state that “it is essential to anyone
interested in sails, and indeed sailing, that the fundamen-
tal principles are thoroughly understood.” They then
follow with several pages of sail theory and repeat basic
ideas that have appeared in the sailing literature for many
years. Unfortunately, their explanations of the most
important aspects of sail theory (how a sail gives lift, the
interaction between the jib and main, the slot effect) are
completely wrong.
Virtually all of the sailing references contain similar, but
erroneous explanations when they discuss the aerody-
namics of sails. References 1 through 5 are typical. These
books and magazine articles were written by recognized
sailing authorities, class champions, Olympic sailors, and
famous sailmakers. How could these fundamental ideas
on sailing be wrong, and how could they persist for so
long? All of these people are certainly excellent sailors.
They have learned from practical experience what it takes
to make a boat go fast. But when they talk or write about
the aerodynamics of sails, they get into trouble.
As a research aerodynamicist, I was dumbfounded when I
first started reading the sailing literature as a beginning
sailor and saw what a confused state sail theory was in.
Even the basic explanations of how a sail generates lift
were wrong. This I could understand, since even the
popular aviation books were wrong in their attempts to
explain lift. It is difficult to explain the generation of lift for
laymen. The simplifications devised in attempts to do this
seemed logical but usually turned out to be wrong.
pdf  sailing 
march 2017
A structured VHDL design method [pdf]
Description of 2 process (one async and one sync) design methodology for VHDL.
vhdl  pdf  work 
february 2017
htop explained | peteris.rocks
For the longest time I did not know what everything meant in htop.

I thought that load average 1.0 on my two core machine means that the CPU usage is at 50%. That's not quite right. And also, why does it say 1.0?

I decided to look everything up and document it here.

They also say that the best way to learn something is to try to teach it.
performance  server  tools 
december 2016
Linux Device Drivers, Third Edition
Device drivers literally drive everything you're interested in--disks, monitors, keyboards, modems--everything outside the computer chip and memory. And writing device drivers is one of the few areas of programming for the Linux operating system that calls for unique, Linux-specific knowledge. For years now, programmers have relied on the classic Linux Device Drivers from O'Reilly to master this critical subject. Now in its third edition, this bestselling guide provides all the information you'll need to write drivers for a wide range of devices.Over the years the book has helped countless programmers learn:

how to support computer peripherals under the Linux operating system
how to develop and write software for new hardware under Linux
the basics of Linux operation even if they are not expecting to write a driver

The new edition of Linux Device Drivers is better than ever. The book covers all the significant changes to Version 2.6 of the Linux kernel, which simplifies many activities, and contains subtle new features that can make a driver both more efficient and more flexible. Readers will find new chapters on important types of drivers not covered previously, such as consoles, USB drivers, and more.Best of all, you don't have to be a kernel hacker to understand and enjoy this book. All you need is an understanding of the C programming language and some background in Unix system calls. And for maximum ease-of-use, the book uses full-featured examples that you can compile and run without special hardware.Today Linux holds fast as the most rapidly growing segment of the computer market and continues to win over enthusiastic adherents in many application areas. With this increasing support, Linux is now absolutely mainstream, and viewed as a solid platform for embedded systems. If you're writing device drivers, you'll want this book. In fact, you'll wonder how drivers are ever written without it.
Linux  work  kernel  C  pdf 
july 2016
Writing a Linux Kernel Module — Part 2: A Character Device | derekmolloy.ie
In this series of articles I describe how you can write a Linux loadable kernel module (LKM) for an embedded Linux device.
Linux  kernel  work  C 
july 2016
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