Software MapServer is an Open Source Web mapping Software

Software MapServer is an Open Source platform for publishing spatial data and interactive mapping applications to the web. Originally developed in the mid-1990’s at the University of Minnesota, MapServer is released under an MIT-style license, and runs on all major platforms (Windows, Linux, Mac OS X).

MapServer is now a project of OSGeo, and is maintained by a growing number of developers (nearing 20) from around the world. It is supported by a diverse group of organizations that fund enhancements and maintenance, and administered within OSGeo by the MapServer Project Steering Committee made up of developers and other contributors.

Free Geographic/UTM Coordinate Converter and Datum Transformations

Geographic/UTM Coordinate Converter is a online tools for coordinates convertions. You can convert between geographic coordinates and Universal Transverse Mercator (UTM) coordinates using  form that available on this site. With Coordinate and Datum Transformations you can convert coordinates between a variety of geodetic datums

ENVI - Remote Sensing and GIS software

ENVI - Remote Sensing and GIS software. ENVI is a software for processing and analyzing geospatial imagery used by scientists, researchers, image analysts, and GIS professionals around the world. ENVI software combines the latest spectral image processing and image analysis technology with an intuitive, user-friendly interface to help you get meaningful information from imagery.

ILWIS - Remote Sensing and GIS software

Open source Remote Sensing and GIS software. The Integrated Land and Water Information System (ILWIS) is a PC-based GIS & Remote Sensing software, developed by ITC up to release 3.3 in 2005. ILWIS comprises a complete package of image processing, spatial analysis and digital mapping. It is easy to learn and use; it has full on-line help, extensive tutorials for direct use in courses and 25 case studies of various discipline

ILWIS software is freely available ('as-is' and free of charge) as open source software (binaries and source code) under the 52°North initiative (GPL license). This software version is called ILWIS 3.4 Open.

More detail about ILWIS (For download and free tutorials and documentation) , click here ILWIS - Remote Sensing and GIS software

Open Source GIS Application Directory

opensourcegis.org is a website that lists applications related to gis, the application contained on the site opensourcegis.org most with free licences (GNU/Public) and open source so that we can study the script and develop the application gis.

For more detail , visite here Open Source GIS

GARNIX a scriptable coordinate conversion tool

GARNIX is a communication program that provides data interface between MS-DOS/Windows/Linux/OSX computers and a GARMIN GPS device .
GARNIX also open source appplication with scriptable coordinate conversion tool  that can converts lon/lat, ECEF und TM (Gauss-Krüger) coordinate systems , and GARNIX works with a variety of GARMIN GPS receivers.

Licences is Free (GNU licence)

Download here coordinate conversion tool

Free download Landsat images for entire world

LANDSAT-1 was the world's first earth observation satellite (EOS), launched by the United States in 1972. It is recognized for its ability to observe the earth far from space. Its excellent set of capabilities emphasized the importance of state-of-the-art remote sensing. Following LANDSAT-1, LANDSAT-2, 3, 4, 5, and 7 were launched. LANDSAT-7 is currently operated as a primary satellite.

LANDSAT-5 was equipped with a multispectral scanner (MSS) and thematic mapper (TM). MSS is an optical sensor designed to observe solar radiation, which is reflected from the Earth's surface in four different spectral bands, using a combination of the optical system and the sensor. TM is a more advanced version of the observation equipment used in the MSS, which observes the Earth's surface in seven spectral bands that range from visible to thermal infrared regions.

The LANDSAT-7 satellite was successfully launched from Vandenburg Air Force Base on April 15, 1999. LANDSAT-7 is a 5,000 pound-class satellite, designed for a 705 km, sun-synchronous, earth mapping orbit with a 16-day repeat cycle. The payload is a single nadir-pointing instrument, the Enhanced Thematic Mapper Plus (ETM+). S-Band is used for commanding and housekeeping telemetry operations, while X-Band is used for instrument data downlink. A 378 gigabit solid state recorder (SSR) can hold 42 minutes of instrument data and 29 hours of housekeeping telemetry concurrently.

LANDSAT-7 is equipped with Enhanced Thematic Mapper Plus (ETM+), the successor of TM. The observation bands are essentially the same seven bands as TM, and the newly added panchromatic band 8, with a high resolution of 15m was added. An instrument malfunction occurred on May 31, 2003, with the result that all Landsat 7 scenes acquired since July 14, 2003 have been collected in "SLC-off" mode

Free download Landsat images for entire world is available for download in MrSID image format. For direct download click here download Landsat images