Ontopia

<img src="https://img.shields.io/github/license/ontopia/ontopia.svg" alt="license"/> <img src="https://img.shields.io/github/release/ontopia/ontopia.svg" alt="release"/> <img src="https://img.shields.io/maven-central/v/net.ontopia/ontopia-engine.svg" alt="maven central"/>

<img width="192" height="101" alt="Ontopia Logo" src="https://github.com/user-attachments/assets/d60899fa-cbcd-4e46-b66f-a84c8d42d8c1" />

Welcome to Ontopia, the open source tools for building, maintaining and deploying Topic Maps-based applications.

If you are a starting user of Ontopia, or want more general information, we recommend you check out the Ontopia.net website.

Get Ontopia

<img width="287" height="90" alt="image" src="https://github.com/user-attachments/assets/46268553-94d7-4e16-abc6-4db293c841f1" />

Older versions

• Ontopia 5.5.0

Note: Using older versions is not advised

---

Using Ontopia

You can use the above link to download a full Ontopia package that includes a fully configured Tomcat instance that you can run on your local machine. This will allow you to start working with Topic Maps. See the requirements and installation guide.

Maven

You can also use Ontopia as a maven dependency, allowing you to build Topic Maps applications yourself:

<dependencies>
    <dependency>
        <groupId>net.ontopia</groupId>
        <artifactId>ontopia-engine</artifactId>
        <version>5.6.0</version>
    </dependency>
</dependencies>

See the Modules page for more possible maven modules and their function.

Building Ontopia

To build the current Ontopia distribution run

$ mvn clean install -Pontopia-distribution-tomcat

from a terminal. The distribution can then be found in ontopia-distribution-tomcat/target/ontopia-distribution-tomcat-X.Y.Z-SNAPSHOT/ where X, Y and Z are the current development version numbers.

Once you build the current Ontopia distribution you will probably want to play with the software.

Everything you want will be inside the distribution you just built; the rest of the subversion checkout serves only to generate that distribution. You can find the documentation within the distribution under the 'doc' directory.

If you're not already familiar with Ontopia, a good document to start with is the install.html in the doc directory of the build you're using.

If you're just starting out, try starting the Tomcat server as described in section 4.3 of the install.html document, then in your Web browser navigate to http://localhost:8080/ -- the web-based applications listed there will give you plenty to do.

---

Need more help?

• We have a home page.
• We have a blog.
• A mailing list has been set up.
• Join us for a chat on IRC: irc.freenode.net#ontopia (log).
• We are on Twitter.