This website makes available:

1. 1. Articles relating to spatial processing whether that be database related (my main technical expertise) or about algorithms. The articles include those of a more general nature.
2. 2. Packaged spatial data processing functions for particular database products eg PostgreSQL/PostGIS, SQL Server Spatial, Oracle etc.
3. 3. Various software and mentoring products via a shop.
   
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Note: The downloadable software is not being sold. So why am I charging? I am asking for a donation for the hundreds of hours spent on creating the code.  And I am asking up front for a donation before the code can be used. This is based on experience in making code freely available in the past, and hoping for a donation later (donations are tax inclusive).