PRODUCT PRICE COMMENTS AquaData Studio ER Modeler $400 A Free 14-day evaluation copy can be downloaded. "The purchase price includes 12-month support. After the first year, support can purchased for 35% of the original license price." """Discounted licences are available for qualified Academic users and Free licenses are available for qualified Open Source Software (OSS) Developers."" " Altova Database Spy $499 or $999 One of a broad range of Tools. Thanks to Graham Lattin for telling me about the change in the link. Archimate Free Trial available "Archmimate is described as an Enterprise Architecture Modelling Tool, which would be great ;-). Unfortunately, the download is for documentation and not for the product !!! It looks like Archimate is a specification for which a number of Vendors have developed Modelling Tools. Here's Wikipedia's entry for Archimate. " Argo UML Free - Open Source For Modelling UML Diagrams - but not for the faint-hearted. Astah ER Diagrams Free to Students. An Annual licence is $119/year and a Perpetual Licence is only $199. A Free Community version is available. "Astah is a total System Design tool supporting UML, ERD,DFD, Flowchart, Mind Map, CRUD and Requirement diagrams) " Azzurri Clay Free From Japan -Open Source Plug-In for Eclipe - Reverse Engineering and generates SQL. "Pro version costs 35,000 Japanese Yen (about $150) !! " Borland Together No prices on the Website "Offers UML but not ERDs - Described as ""Visual Modeling for Software Architecture Design""." The Website offers information on Model-Driven Development. CA Gen No prices on the Website Provides Model-Driven support for Agile Development. Has a UK Partner in Response Systems. Case Studio 2 Acquired by Toad (see below under Toad Data Modeler) "FreeDownload Trial, then $175(Lite) or $369(Full)" "Looks impressive - supports an unusally wide range of Databases, including Firebird, MaxDB,Postgres - if you try it, please me have your comments." "Here's a ""5-Star"" Review from Dan Horn." CASEWise "Aimed at Business Process Modelling, but has links to DataArchitect." ConceptDraw $179 (50% off) DataArchitect "$2,000" "If you are buying for the company, buy this one. " "DataArchitect is part of Power Designer, which is described below." DataArchitect This product has disappeared - thanks to Matthijs Willemstein for letting me know. "If you have any news or suggestions for replacements, please let me know. " Database Design Studio "Lite at $80 , Professional at $299. and maybe Educational at $39. " Lite supports ERD Modeling and Forward Engineering and Professional adds support for Reverse Engineering. Database Designer $125 Specially for PostgreSQL and includes Reverse Engineering.They give it away Free if you mention it in your Blog. DB Constructor Free/$150 Here's a glowing reference at the FreeDownloadCenter Web Site. DBDesigner 4 Free (Donations welcome) Open Source and highly recommended if you work with MySQL. DBDesigner-Fork Free "A Fork of DBDesigner 4 (see above)- generates SQL scripts for Oracle, SQL Server, MySQL and FireBird. " DBForge for MySQL From $59.95 "dbForge Studio for MySQL offers a universal MySQL and MariaDB client for database management, administration and development. With the help of this intelligent MySQL client the work with data and code has become easier and more convenient." "Devart's MySQL GUI tool provides utilities to compare, synchronize, and backup MySQL databases with scheduling," and gives possibility to analyze and report MySQL tables data. Here's an example of a DB Forge Data Model :- DB Main "Free for the Data Modeller, with add-ons available at typical prices of 1,000 Euros or US Dollars." "Produced in Belgium, with documentation in English and French." "Offers a very impressive range of features, including :-" """... meta-modeling components that allow its users to develop new functions and extend its repository"" " DBSchema Free download and then only $45 to buy. Reverse Engineer Oracle and other Databases using JDBC connections. Can also generate SQL to create Databases from a Data Model. DBVisualiser "Free evaluation and then only $129 to buy,($103 for Education)." "Helpful for DBA work, like performance monitoring." A Finalist for 'Best Data Access Tool 2005' in the Java Developers Journal Readers Choice Award and included in the BEA WebLogic Workshop. "Free version available with ""the basic level of features that most users require""." DB Wrench $149 """Forward and Reverse Engineer, Affordable, Easy to Use."" " Dezign Offers a Free download or starts at $259 to buy. A recent upgrade offers significantly improved features. Supports Forward and Reverse Engineering for about 20 different Databases. "If you are buying for yourself, buy this one" Here's an example of a Dezign Data Model :- Dia Free - Contributions suggested """Dia is software for drawing diagrams similar to Visio"", such as UML. It's Open Source with many authors. Install it from here " Druid Generates SQL Scripts and Java classes. Thanks again to Josh Bosh. Enterprise Architect Free Download - then $135 to $239 "From Australia - supports UML and very affordable, and has an entry in Wikipedia. " Entity Framework Add-on $995+/developer """Makes Microsoft's Entity Framework easier to use""" ER One Free Sample of a Data Model ER Creator About $100 Includes a Tutorial and a Trial version. ER Diagrammer $240 Free download is available and a User Forum is supported. ERD Concepts 5 $179 Euros (single-user) A Free download is available. ER/Studio "$1,500 up to $7,500 (!!!)" In response to a helpful comment from Daryl Purcell I have added a link to US prices and UK prices. ERwin "There is a Free Community Edition, and a price list is in the Online Store. " "One of the Market Leaders - an enterprise solution with a particularly powerful Model Manager for large teams, especially useful when operating from different locations." Here's an example of an ERwin Data Model :- Experience Free Trial then 90 Euros (about $50)   FastTracks Works only with UML and Ruby on Rails GenMyModel Free !!! A beautiful Web Site """GenMyModel is an innovative online UML tool for software architects and developers." "It allows to create UML-compliant diagrams, export and generate code from your web browser. " Gliffy Free option available The ONLY Online Modelling Tool I have found - unfortunately it only does UML at the moment. Google WWW SQL Designer Free Open Source Good-looking sample Data Model. G-TEA Data Architect Free Community version available An interesting and (currently) a unique Cloud-based Modelling Tool Happy Fish $89 Renamed ERD Concepts. HiberObjects Free An open source UML Tool for creating Class diagrams that supports Reverse Engineering IBM InfoSphere Data Architect "$5,570 !!!" "Provides reverse and forward engineering facilities for a range of databases, also ERD and UML Modelling." ImportER MySQL Excellent value at $55 Reverse Engineering for MySQL Innovator Free trial then no price details available Looks good. It says it supports UML and ERD. "In the web site, it says :-" """With the addition of the IDEF1X-Notation also for Entity-Relationship-Models, Innovator is for the first time provided with a unified graphical presentation for both, the Entity-Relationship as well as the Data Base Diagrams.""" Here's an example of an Innovator Data Model :- KeepTool $300 / 300 Euros Can Reverse Engineer Oracle Databases to create Data Models - Comments and experiences welcome. MagicDraw Award-winning UML Modeller and very popular with Java enthusiasts. Mega Database Builder Looks like a great product with a wide range of features BUT there is no price information on their Site and they offer an evaluation version but you can't download it - instead they will contact you to discuss your requirements !!! ModelRight "Free Trial, then $495 for DB2, Oracle and SQL Server, $295 for MySQL and PostgreSQL, and $195 for Access." "An enthusiastic user is David McKelvey from Richardson,Texas, who says “As a pure Database Physical Modeling Tool, nothing else comes close.""" MySQL Workbench Free with MySQL (also Free) Looks good and offers Reverse Engineering. Navicat Data Modeler Starts at $79 for a non-commercial version Looks good with a comprehensive range of versions. pgModeler $10 pgModeler - PostgreSQL Database Modeler - is an open source data modeling tool designed for PostgreSQL. Very impressive Web Site - offers 4 Social Networks """Combines ERD features with Postgres extensions""." Here is a sample Model in pgModeller:- Objecteering Free download trial "Looks good with a comprehensive range of features, including UML support." OmniGraffle Free download trial For Mac only Open ModelSphere Free Open Source and UML Oracle Designer $200 Available from the Oracle Technology Network (Free to join). "Oracle says ""Oracle Designer is our model-driven development tool based on the principles of Information Engineering.""" Oracle J-Developer Free Download UML diagramming is part of J-Developer. Also available from the Oracle Technology Network. "Oracle says ""Oracle JDeveloper is an integrated development environment with end-to-end support for modeling, developing, debugging, optimizing, and deploying Java applications and Web services."" " Oracle SQL Developer Data Modeler Free Many thanks to Tuomas Kassila in Finland for telling us about this. Oracle says :- "SQL Developer Data Modeler is a Free data modeling and design tool, for ERD and Multi-dimensional modeling, with forward and reverse engineering. It imports from and exports to a variety of sources and targets." "In a discussion on LInkdedIn, Kent Graziano said :-" Oracle SQL Developer Data Modeler has a Logical Modeling diagrammer that gives you the option of three different notations and the ability to turn various display options on and off. "You also have an option to use box-in-box for sub types (if you like that style), so it is very usable. " ORM Designer Offers a Free trial then costs $140 or 99 Euros. Thanks to Ludek Vodicka in Czechoslovakia. PG Designer Open Source - for PostgreSQL. Thanks again to Josh Bosh. Platinum Repository "This is a Repository, rather than a Modelling Tool, with a 'Where-used' facility, and it lets you add entity types,such as Business Function, Business Role and Script. " Pony ORM No price details available - in fact no details of any sort. "A very happy User says ""a fantastic data modelling tool"" " Poseidon "Comes highly recommended, good for UML, and has an open-source Free version. " Power Designer "$2,000" "If you are buying for the company, consider this one. " ProVision now renamed to OpenText "Free Trial, but prices not avalable on the Website." "Includes Frameworks, such as Zachman, and also Reference Models, such as Customers, Finance and Telecomms, and an interesting 3-D Architecture " RevJ Free Open Source This Object Source product generates ERD Data Models from SQL. It is a way of understanding complex SQL that you might have 'inherited' from somebody else. Please Email me if you have any comments on RevJ. Rhalotel DB Diagram Mgr 98 Euros/$100 RM Bench Free Trial then $120 """Graphical Modelling of Relational Databases in Eclipse""." Safyr "Used to be about $14,000 but check with Silwood" Safyr is more than a Modelling Tool. It sits between an ERP like SAP and a Modelling Tool like ERWin. "It provides a very useful and powerful Metadata manipulation package which allows you to extract metadata from ERPs such as SAP, Salesforce, J.D. Edwards, PeopleSoft, Siebel and Oracle E-Business Suite which can then be 'reverse engineered' into a Modelling Tool like ERwin, to see the Data Model." Schema Spy (command line) or Schema Spy GUI (Point and click) Free May not exactly be a Data Modelling Tool. "On the Web Site, it is described as a ""Graphical Database Schema Metadata Browser"" and a tool to investigate the validity of a Data Model." The Web Site also says :- """Do you hate starting on a new project and having to try to figure out someone else's idea of a database?" Or are you in QA and the developers expect you to understand all the relationships in their schema? If so then this tool's for you. A Contributor to the LinekdIn Data Architecture Group said :- """Schemaspy would be nice for Reverse Engineering as it outputs in HTML and you can zip the file and send it around to people.