Crystal FLOW is a useful tool for analyzing C/C++ code with features such as flowcharts, rich trees, and exports to Visio/JPEG. It offers two editions, one with HTML docs and flowcharts, and another with advanced features like call/data flows, object/stack size, and data dependency analysis.

One of the things I love about this software is that it has multiple flowchart flavors, such as level, optimal, loop, and conditions, which makes it versatile for different types of code. Another great feature is the code and flowchart synchronization while browsing, which means I can easily comment flowcharts for a wider audience.
With Crystal REVS, I can export flowcharts to BMP, JPEG, and VISIO formats, and I can even print large flowcharts in a single page. The software has also made reading code incredibly easy, with auto-formatting of code and comments. I can even line up object names in successive declarations, which makes it easier to read.
Another great feature is the software metrics, such as McCabes and Halstead, which allows me to detect errors easily. The software even has cross-reference for all identifiers, and color-coded metrics for better visualization. I can also import VC++, Visual Studio.Net, and Borland projects, which makes it really easy to get started.
Overall, Crystal REVS has been a game-changer for me. It has helped me understand code in significantly less time and has made coding a lot more enjoyable. I highly recommend this software to anyone who wants to improve their coding skills.
Version 4.60: Data Dependency & Data Structure Trees, Static Analysis & Document Generation Add-on, Stack Size, Object Size calculations, Recursive functions, Many new tools, New Compilers & IDE Support, Tree Export to Visio, Color & Format Schemes Interface, New Options menu, Code and Algorithm generator, etc
Version 4.36: Command Line mode Add-on, Recursive functions, Improved interface, Compiler Support, IDE Support, HTML Help, Static Check Publisher, Code Publisher, Code Generator, and, much more
Version 3.91: Function Hierarchy diagrams in HTML Docs, Bookmarks across files, Tree Print previews, Bug fixes and improvements, 24X7 Support with Online Tutotials, etc
Version 3.60: Object DataFlows, CallFlows, Whole Project Flowcharts, Flowchars with Inline Expansion, Source Code Publisher, Customizable Flowchart Symbols, Bug fixes and improvements
Version 2.75: Flowcharts Batch process for Printing,Export to images & Visio,Print Flowchart in single page,Color Coded Metrics in Html Reports,File Include By Tree for a file,files Batch printing,Optimizations & Fixed problems ...
Version 2.15: New formatting options,Improved syntax checking,Link to Quick Reference pdf documents,Line Numbers are displayed in the left margin,Other card added in Project Management,Optimizations & Fixed problems ...
Version 2.0: HTML Docs with flowcharts, call/caller/#include trees, Custom shapes in Flowchart, State/Transition Diagrams, Fixed problems ...
Version 1.75: Page-Setup & Zoom in Flowchart, Improved PRJ Mgt, Keil Compiler support, Any Font/Size in flowchart, Better #include Mgt, Included declns in flowcharts, Fixed problems ....
Version 1.42: Custom-Shapes in Flowcharts, Flowcharts with Code & Comment, Support for asm/#pragma, Integrated with latest Installer, File-Call Tree, Fixes ...
Version 1.32: Fixes, Export flowcharts to Visio, Enhanced file/flowchart print, Print-preview for flowcharts...