Open-Source Startups to Watch in 2026

social media open source decentralisation
cybersecurity open source artificial intelligence
hardware open-source internet-of-things +1

London, United Kingdom

legaltech saas ai
database search analytics +2

Berlin, Germany

cybersecurity networking open-source +1
open source software cloud software collaboration software +1
artificial intelligence software open-source +1

Tokyo, Austria

artificial intelligence developer tools agentic AI +1

Leipzig, Germany

edge-computing industrial-iot middleware +2

The Hague, Netherlands

productivity software collaboration software cloud software +3
Name Location Industries Actions
Mastodon
social media open source decentralisation
View
Filigran
cybersecurity open source artificial intelligence
View
Arduino
hardware open-source internet-of-things +1
View
Antidote London, United Kingdom
legaltech saas ai
View
SereneDB
database search analytics +2
View
NetBird Berlin, Germany
cybersecurity networking open-source +1
View
Nextcloud
open source software cloud software collaboration software +1
View
Moltbot
artificial intelligence software open-source +1
View
OpenClaw Tokyo, Austria
artificial intelligence developer tools agentic AI +1
View
Peeriot Leipzig, Germany
edge-computing industrial-iot middleware +2
View
Office.eu The Hague, Netherlands
productivity software collaboration software cloud software +3
View