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Cilium — Networking/eBPF (Open Source)

Cilium is an open-source Networking/eBPF solution from CNCF (Isovalent). Review its features and licensing on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Cilium?

Cilium is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under Networking/eBPF and published by CNCF (Isovalent). Buyers typically evaluate Cilium when they need a dependable Networking/eBPF option and want to weigh the trade-offs between free, open-source and paid tools before committing.

Frequently asked questions

Is Cilium free?
Yes. Cilium is open source and free to use, with no purchase cost for the core product.
What type of software is Cilium?
Cilium is an open-source Networking/eBPF tool developed by CNCF (Isovalent).

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