Some potential open source tools that may be popular in 2023 include:

1. Cloud-based platforms such as OpenStack and Kubernetes for managing and deploying applications in the cloud.
2. Data analytics tools such as Apache Spark and Hadoop for processing and analyzing large amounts of data.
3. DevOps tools such as Ansible and Jenkins for automating the development and deployment process.
4. Programming languages such as Python and Ruby for building web and mobile applications.
5. Operating systems such as Linux and Chrome OS for running devices and servers.
6. Collaboration tools such as Slack and Trello for team communication and project management.
7. Content management systems such as WordPress and Joomla for building websites and blogs.
8. Cybersecurity tools such as Nmap and Wireshark for protecting networks and systems.