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@@ -16,6 +16,22 @@ Cheby for HDL designers presentation (2019-03-25) [Cheby-for-hdl.pdf](uploads/0f
 
 Mailing list: cheby-codegen@cern.ch
 
+## Similar tools
+
+Automatically generating code from a description is certainly not a new idea and there are many existing tools with similar features.  Here is a non-exhaustive list.
+
+*  wbgen (from CERN BE-CO-HT).  One of the predecessor of Cheby.  It can directly generate cross clock-domain logic, FIFOs and an interrupt controller.  But it was limited to WB bus and cannot handle hierarchy of designs.
+
+* Cheburashka + Gena (from CERN BE-RF and CERN BE-BI).  Also a predecessor of Cheby.  The input file is XML, which is seen as difficult to write by hand and to read; this was mitigated by a graphical editor.  It supports many features commonly used at CERN (but not outside), including its non-standard bus.
+
+* [bitvis.no Register Wizard](https://www.bitvis.no/media/register_wizard).  A commercial (and non open source) tool with a JSON input.
+
+* [IP-xact](https://www.accellera.org/downloads/standards/ip-xact).  A standard using XML files to describe interface, including the registers.  Not widely used or used with many private extensions.
+
+* [SystemRDL](https://www.accellera.org/downloads/standards/systemrdl).  Register Description Language.  A standard that is apparently not used.
+
+* [airhdl](https://airhdl.com/index.jsp).  A nice web site that can generate hdl and doc, but closed-source.
+
 ## Status
 
 | Date       | Event |
@@ -24,4 +40,4 @@ Mailing list: cheby-codegen@cern.ch
 | 2018-10-26 | [Cheby-1.0](https://gitlab.cern.ch/cohtdrivers/cheby/tags/cheby-1.0) released |
 | 2018-06-06 | [Cheby-0.2](https://gitlab.cern.ch/cohtdrivers/cheby/tags/cheby-0.2) released |
 | 2018-05-29 | [Cheby-0.1](https://gitlab.cern.ch/cohtdrivers/cheby/tags/cheby-0.1) released |
-| 2017-11-10 | Start of the project |
+| 2017-11-10 | Start of the project |
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