Violet is a UML editor with these benefits:
* Very easy to learn and use
* Draws nice-looking diagrams
* Completely free
* Cross-platform.
Violet is intended for developers, students, teachers, and authors who need to produce simple UML diagrams quickly

MySQL Workbench enables a DBA, developer, or data architect to visually design, generate, and manage all types of databases including Web, OLTP, and data warehouse databases. It includes everything a data modeler needs for creating complex ER models, and also delivers key features for performing difficult change management and documentation tasks that normally require much time and effort.

Bonita Open Solution combines three solutions in one: an innovative Studio for process modeling, a powerful BPM & Workflow engine and a breakthrough user interface.

Creately is a web based diagram software built with project teams in mind. Users can draw flowcharts, UML diagrams, Network diagrams, ER diagrams, Organizational charts, Gantt charts and many more diagram types using Creately. Creately has some custom built features for project teams. Users can share and collaborate on diagrams using projects. Easy team admin interface, comment systems etc help to work as a team.
There is an desktop version of the software for people who want offline diagramming. Also there are plugins for Confluence, JIRA and FogBugz if a user wants to add diagrams in any of those platforms.

Real Time Developer Studio is a tool dedicated to the specification and the design of real time and embedded applications based on standard and public graphical languages such as SDL (Specification and Description Language), SDL-RT, and UML (Unified Modeling Language). SDL-RT is a combination of UML, SDL, C, and C++ standards dedicated to real time and embedded application modeling. It is a UML real time profile in which each service of the real time operating system has a dedicated graphical representation such as semaphores, timers, messages (sometimes based on signals or events), message queues, and library of active and passive classes, architecture of tasks or threads, and detailed finite state machines integrating C and C++ code. Real time developers find their way easily because all these concepts are familiar to them.

Overture is a community-based project developing the next generation of open-source tools to support modelling and analysis in the design of computer-based systems. Overture supports VDM: The Vienna Development Method, a set of modelling techniques with a long and successful history of industrial application and research. Overture is an integrated development environment (IDE) for developing VDM models. The Overture tools are written entirely in Java and build on top of the Eclipse platform.

MicroOLAP Database Designer for MySQL is a visual development system intended for database design, modeling, creation, modification and reverse engineering in an easy and powerful way. MicroOLAP Database Designer for MySQL allows you to construct your database in easy-to-understand visual environment by working with graphical representation of tables, columns, relations and so on. Finally you will get Physical Entity Relationship Model (ER Model) that can be exported in SQL script, or directly built on working MySQL database server.

SQL Maestro for MySQL is the premier MySQL admin tool for database management, control and development. Key features include:
- all versions of MySQL Server including MySQL 5.0 and 5.1;
- easy database object management;
- database designer;
- data management: viewing, editing, grouping, sorting and filtering abilities;
- comfortable access to the MySQL security features;
- handy SQL editor with code folding, syntax highlighting, and multi-threading;
- visual query builder;
- possibility to connect to remote servers via SSH or HTTP tunnel;
- data export/import to/from the most popular formats;
- powerful BLOB viewer/editor.

Leap SE is a CASE tool that turns system requirements directly into object models for software development. More than a Requirements Management application, Leap SE shortens the systems development lifecycle and accelerates rapid application development (RAD).

vfThreaded-x86 is the only tool that gives you the precise information you need to make sure that your parallelized software will work correctly and have the highest performance on your multicore x86 machine.