1、the JPL APPS service based on Gipsy technology ：

http://apps.gdgps.net/

2、the CSRS service of the Natural Resources of Canada

https://webapp.geod.nrcan.gc.ca/geod/tools-outils/ppp.php?locale=en

3、the University of Brunswick service GAPS

http://gaps.gge.unb.ca/

4、 the magicGNSS by GMV, Spain

https://magicgnss.gmv.com/#

5、SCOUT: Scripps Coordinate Update Tool

http://sopac.ucsd.edu/scout.shtml

6、Trimble CenterPoint RTX Post-Processing

http://www.trimblertx.com/

7、AUSPOS 澳大利亚GPS数据在线处理服务

（The Australian Surveying and Land Information Group's Online GPS Processing Service）

http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/auspos

8、OPUS（Online Positioning User Service）美国大地测量局开发的在线定位免费软件

https://www.ngs.noaa.gov/OPUS/