FastReport VCL Full source code, royalty-free!
FastReport provides all the tools you need to develop reports, including a report engine, report designer, previewer, dialog designer, and Pascal-like macro language interpreter. For Delphi 2-7, 2005, CB1-6
FlowChart.NET The FlowChart.NET component adds to applications the ability to create and present workflow, flowchart and process diagrams, database entity-relationship diagrams, organizational, hierarchy and relationship charts, network schemes, graphs and trees.
ExGIS ExGIS(OCX) is a components suite for geographical(GIS) develop applications, to be used in Visual Basic or any other that supports OCX environments.
DISLIN for Compaq Visual Fortran DISLIN is a high-level and easy to use plotting library for displaying data as curves, bar graphs, pie charts, 3D-colour plots, surfaces, contours and maps. Several output formats are supported such as X11, VGA, PostScript, PDF, CGM, PNG and TIFF.