More links

Back to Stefan's home page

Some useful web tools

• Bing Swedish
• Outlook login
• YouTube
• Hitta.se Find telephone numbers, addresses, maps and much more in Sweden
• Wikipedia English
• Wikipedia Swedish
• Online Unit Conversion
• Google Translate Swedish
• Google Swedish

Internet and computer security

• DuckDuckGo Search anonymously on Internet, very good!
• Tor Browser Bundle Browse anonymously and encrypted on Internet, a bit slow though
• AirVPN Set up a secure and anonymous Internet and broadband VPN connection for a small fee
• avast! A very good antivirus for free
• Avira Another very good antivirus for free
• 7-Zip Free open-source file and map archiver with compression, encryption and optional password protection, very good!
• Eraser Erase files and folders from your hard drive permanently, irreversible and without traces, very good!

Miscellaneous links

• Visit Skåne Very good information about Skåne (in Swedish)
• Lund University (LU)
• Lund Institute of Technology (LTH)
• Vattenhallen Science Center LTH (in Swedish)
• Biological Museums at Lund University
• SundTV - Lund Museum of Zoology A very nice video from this very fascinating museum! (talk in Swedish)
• Lennart's nice page about Lund Museum of Zoology I really hope that this very fascinating museum can be preserved in some form! (in Swedish)
• WWF World
• WWF Sweden I am Tiger sponsor for them. Please join!

Astronomy

• Lund Observatory
• Statistic for astronomers by L. Lindegren (very good and useful, download lecture 1-8 from this web-page)
• The Feynman Lectures on Physics Partly a bit above my head, but these lectures and exercises are awesome! New!
• Nordic Optical Telescope (NOT)
• European Southern Observatory (ESO)
• Portal to the Universe
• Tycho Brahe amateur observatory (in Swedish)
• Astrokonsult (in Swedish)
• Photopic Sky Survey Really magnificent and extraordinary work by Nick Risinger!
• NASA | SDO: Year 5 So beautiful, wild and "alive", I got touched, our dear "home star"! New!
• Virtual Universe Developed By Computer Simulation Recreates Cosmic Evolution Really awesome! New!
• Populär Astronomi A nice astronomy magazine in Sweden
• SETI@home Search for Extraterrestrial Intelligence
• SETI@home Search for Extraterrestrial Intelligence (old web-page)
• XEphem Astronomical Software Ephemeris
• Cartes du Ciel Sky Charts

Physics, chemistry, experiments etc

• The Feynman Lectures on Physics Partly a bit above my head, but these lectures and exercises are awesome! New!
• CERN European Organization for Nuclear Research
• Tesla Downunder Very fascinating experiments! :-) Do absolutely NOT try to make something similar if you don't know what you are doing!

Special products

• Eskader Models Steam engine and many other models (in Swedish)
• Stuart Live Steam Models Expensive but beautiful
• Stuart Models - Steam Engines A very good site with also some useful manuals
• Acme Klein Bottle Get an Acme Klein Bottle handcrafted in glass

Hi-Fi and tube audio systems

• Dared Audio Tube amplifiers etc (in Swedish)
• Pete Millett's DIY Audio pages Many tube amplifier projects and many scanned good old technical books to download
• Heathkit Virtual Museum

Electronics etc

• Elektor.com A very nice electronics magazine
• Elektor.se A very nice electronics magazine (in Swedish)
• Embedded Acquisition Systems Many very interesting projects, not at least the UHU DC servo motor drive board!
• Velleman Components Electronics construction kits etc
• Kitsrus - DIY Electronics Electronics construction kits etc
• SparkFun Electronics Electronics construction kits etc
• Anykits Electronics construction kits etc
• ELFA A nice electronics component shop in Sweden
• Electrokit (in Swedish)
• BHIAB Electronics AB (in Swedish)
• Electronics corner By Kenneth Johansson (in Swedish)

Robots, R/C robot vehicles, servo systems, motors etc

• 4QD Speed controllers for battery operated electric motors etc
• RobotShop.ca
• SuperDroid Robots
• Pololu
• Lawicel (in Swedish)
• HobbyTronik (in Swedish)
• IronBill AB Fine mechanics etc (in Swedish)
• JB CNC Cool stuff for your CNC machine, servo, stepper motors and much more
• Raw CNC More cool stuff for your CNC machine, servo, stepper motors and much more
• Golden Motor Very nice and powerful brushless electric motors and bicycle conversion kits etc
• LEGO Mindstorms
• HiTechnic LEGO certified robotic sensors, HTWay LEGO Mindstorms self balancing robot etc

Computers etc

• IDG Sweden
• Tom's Hardware Guide
• Intel
• Microsoft
• Fedora Linux
• Linux Online
• Register as Linux user

Miscellaneous programs and tools

• DVDVideoSoft Very good free multi-format YouTube, video and MP3 file downloader and converter software
• GSview A powerful GNU Postscript reader for Windows
• MiKTeX TeX and LaTeX for Windows
• Vim the editor Somewhat different, but probably the best tool to edit C-programs, HTML-files etc (also for Windows)
• WinSCP If you like gFTP in Linux this is definitely the right Windows FTP client for you!
• CPUCooL Monitor CPU and graphics card temperatures and much more
• NCH Swift Sound Very good audio software (including some free and very useful demos)
• DJGPP A very powerful GNU C/C++ compiler for DOS (under Windows 98/2000/XP)
• Allegro A powerful game programming library
• Xfig Drawing Program for the X Windows System
• XV A nice image editor for Unix and Linux
• gFTP A nice FTP program for Unix and Linux
• Gnuplot A powerful plot program
• PGPLOT A powerful plot library for Fortran and C
• POV-Ray A very powerful and free ray-tracing program

Numbers, mathematics and packages for arbitrary precision calculations

• y-cruncher The best and fastest mathematical constants computation program for multiple CPU cores! New π world record 100·10¹² digits! :-)
• GMP GNU Multiple Precision Arithmetic Library - very fast
• CLN Class Library for Numbers
• BigDigits multiple-precision arithmetic source code
• Apfloat A C++ high performance arbitrary precision arithmetic package
• Chepes Mathematical Library (C sources) Extended precision functions etc
• Numerical Recipes Home Page
• Maxima a Computer Algebra System (very powerful and free, also for Windows)
• Sage A free open source mathematics software system (very powerful)
• Octave A free Matlab like software package for numerical computations
• Scilab The open source platform for numerical computation
• Mathematical constants and computation
• Fast Algorithms and the FEE Method
• The Karatsuba Method 'Divide and Conquer'
• Dara's Pi Pages A quite old web-page about comparison of different Pi programs etc
• Fast implementation of the segmented sieve of Eratosthenes
• GIMPS The Great Internet Mersenne Prime Search

Benchmarks

• SPEC results
• Futuremark Corporation CPU and graphics benchmarks for Windows etc
• FLOPS benchmark An old but very good (pure +, -, * and /) floating point benchmark in Forth and C with some old results
• Linux/Unix nbench

Very good digital image artists and resources

• POV-Ray A very powerful and free ray-tracing program
• Fractint A very nice, powerful and fast fractal program! Finally Fractint 20.04 is released for Windows! :-)
• POVRay Fractal Raytracing Contest Result Page
• Oyonale Homepage of Gilles Tran an awesome ray-tracing artist!
• Homepage of Andrea and Friedrich Lohmüller Their images are awesome and they have a very good link collection!
• The Persistence of Ignorance Homepage of Jaime Vives Piqueres, another brilliant ray-tracing artist!
• Tor Olav's home page
• www.evilsuperbrain.com
• runevision - 3D Graphics (POV-Ray)

Games etc

• Microsoft Flight 2020 Really awesome, realistic and very beautiful!
• Phoenix Professional Radio Control Flight Simulator Very good and realistic!
• WZebra Othello program Very powerful and free
• Really Slick Screensavers Very nice

Funny things about computers and programming

• The East Campus Nerd Test
• The evolution of a programmer
• The task is to shoot yourself in the foot