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NVIDIA FLARE

NVIDIA
open source / Overall score: 3.5

NVIDIA's federated learning runtime and SDK. A provisioned server and client sites run jobs that keep each site's data local; it ships a simulator for research, Kubernetes and Slurm launchers for production and HPC sites, a mobile SDK for Android and iOS devices, homomorphic encryption, differential privacy and confidential-computing options, and federated fine-tuning of large language models.

Openness

5 high confidence
5.0
license
Apache-2.0(OSI
source
public(the whole runtime, simulator, provisioning, dashboard and mobile SDK)
core features withheld
no — no enterprise tree

NVIDIA publishes the whole of FLARE under Apache-2.0, and nothing in the repository is held back for a paid tier. Its own README presents it as the open SDK platform builders use to create their own offerings, and Apheris, one of the closed platforms in this category, runs on it.

Adoption

2 medium confidence
2.0

PyPI downloads of `nvflare`, the package the project documents for installing both the simulator and the site runtimes. Sites run the same package, so downloads measure the product rather than a client for it.

Capability

5 high confidence
5.0

FLARE is the one product here that reaches all three settings at once: production sites with provisioned identities, HPC clusters through a Slurm launcher, and phones through a mobile SDK. It also publishes timing and memory figures for federated LLM training up to 72 billion parameters, which no other product in the category does.

Verified 2026-09-27