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Project highlights for World Open Source Day: My open source tools


As part of our celebrations for World Open Source Day, we’ve compiled a list of frequently used software. I’m a big fan of open licenses and especially tools that don’t require an internet connection, so I’ve compiled a list of some of my favorites that meet both criteria.

Note that these are just the programs that I want to highlight as useful and effective. Their presence does not represent an endorsement by Sonatype. I’ve independently contributed to all three projects.

Flowcharts: /

Although most will see this as a somewhat basic, open source Visio alternative, is for me a dream come true. It’s an accessible, easy-to-use, and shareable way to explain processes, concepts, and choices in a given system. The program will integrate with a variety of other software, including VSCode, Atlassian, and more.

image6-Feb-02-2023-03-43-08-7665-PMView of the program.

I often use this for walking through a process, explaining the logic of a system, or mocking up graphics. Using it live on a shared desktop session, I’ve been able to clarify steps, explain thinking, and define boundaries.

Below is a graphic created using the program for an article on Common Vulnerabilities and Exposures to explain the range of scoring available for vulnerabilities.

image3-Feb-02-2023-03-44-44-3556-PMExample of a number scale created in

You can download or run the program through a web browser from the home page.

Productivity: LibreOffice

LibreOffice is a cross-platform productivity suite available for Windows, Mac, and Linux, with a feature-limited version available on mobile devices. The program mirrors similar programs like Google Docs and Microsoft Office, with separate internal tools for things like word processing, spreadsheets, and presentations.

image1-Feb-02-2023-03-47-34-0915-PMView of the startup screen with available templates.

Most notably, the program may be the single most compatible software in active development today. It has adopted import tools to view hundreds of different file formats from a wealth of different software from the last 30 years.

Although the collaborative features are well behind its peers, the broad compatibility and familiar interface make it a reliable solution. I use LibreOffice daily for drafting content, editing transcripts, keeping notes, and basic image edits.

Below is a quick template I often use that was created within the included “Impress” presentation tool. I use this to quickly add semi-transparent logo watermarks to Sonatype screenshots and images.

image4-Feb-02-2023-03-48-59-3078-PMImage of LibreOffice Impress presentation editor used for simple watermarks.

If you are a Linux user, you likely already have this software installed. Other operating systems can download from the home page:

Image edition: PhotoDemon

Currently only available for Windows, this lightweight photo editor can serve as a basic Photoshop alternative. It’s fast and easy to learn with power features like batch conversion, macros, and support for Photoshop plugins. There are a host of brushes, tweaks, filters, and other tools.

image5-Feb-02-2023-03-50-46-2196-PMPhotoDemon software screencap.

I use the program on occasion for image cleanup or compression. Here’s an example of an image I modified for a post talking about the future of software development:

image2An image modified using PhotoDemon built from an open-licensed photo by Lindsey LaMont.

Just a taste

These are just three of the huge list of open source projects that are available today. And each of these programs is built using hundreds of component projects. Our thanks to the authors for making them free to use as well as sharing the internals to review, study, and modify.

You can get involved in open source software without being a developer. Visit the website of a project you love and ask what’s needed.

Happy World Open Source Day 2023!



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Written by Luke Mcbride

Luke is a writer at Sonatype covering everything from open source licenses and liability to DevSecOps trends and container security.