# Developer Documentation for Apache-2.0

Many of the documents on these Developer pages are lifted from Apache 1.3's documentation. While they are all being updated to Apache 2.0, they are in different stages of progress. Please be patient, and point out any discrepancies or errors on the developer/ pages directly to the dev@httpd.apache.org mailing list.

### Topics

Apache 2.0 API Notes
  Overview of Apache's Application Programming Interface.
Apache Hook Functions
  Request Processing in Apache 2.0
Apache Filters
Porting Apache 1.3 Modules
Debugging Memory Allocation
Documenting Apache 2.0