Hawth’s Tools – Free Tools for Spatial Analysis

Hawth’s Analysis Tools provides a suite of solutions for tasks common in spatial analysis. Specifically developed for ecological studies, these tools can be used in any application for analyzing spatial data. They extend (and in some cases simplify) core ArcGIS functionality that is not available out-of-the-box. The extension consists of more than fifty tools that cover a broad range of analysis types including analyzing, sampling, and editing vector as well as raster data, and tools for common operations in tables and CSV files. All tools and descriptions can be found here:

Tool Descriptions

Analysis Tools Intersect Point Tool Distance Between Points (Within Layer) Distance Between Points (Betw. Layer) Count Points In Polygons Polygon In Polygon Analysis Sum Line Lengths in Polygons Line Raster Intersection Statistics Enumerate Intersecting Features Line Metrics Sampling Tools Create Random Selection Random Selection Within Subsets Generate Random Points Generate Regular Points Conditional Point Sampling Tool Create Vector Grid (lines/polygons) Create Sample Shapes (various shapes) Generare Random 3D Points Animal Movements Create Minimum Convex Polygons Calculate Movement Parameters Convert Locations To Paths Convert Paths to Points CRW Simulation I CRW Simulation II Kernel Tools Fixed Kernel Density Estimator Batch Fixed Kernel Density Estimator Percent Volume Contour Raster Tools Clip Raster Clip Raster By Polygons Landscape Characterization (fast) Extract Raster Edge Thematic Raster Summary (by polygon) Zonal Statistics ++ (by polygon) Spatial Replace Tool Maximum Grid Separation Tool Cellular Automata (1D x Time) Grid Spread (Cellular Automata) Raster Pixel Type Conversion Table Tools Add Area Field To Table Add Length Field To Table Add XY To Table List Unique Values Sum Values Delete Multiple Fields Add XY Line Data (creates line layer) CSV Management Tool Vector Editing Tools Create Buffers (Retain Attributes) Vector Rotation and Shifting Tool Snap Points To Lines Tool Intersect Lines (Make Points) Split Vector Layer By Unique Value Field Specialist Tools River Sample Extraction Point Redistribution Tool PLSS Point Finder Julian Day Lookup Other Tools Digitize XY Coordinates Set/Zoom To View Extent Bookmark

The tools run on ArcGIS 9.x at the ArcView, ArcEditor, and ArcInfo license levels. *These tools do not support on-the-fly projection changes, so it is important that tools that use more than one input layer have the same projection.

Download:
http://www.spatialecology.com/htools/download.php