FaaSr
FaaSr: A self-managed framework for orchestrating event-triggered R functions across FaaS providers. Ranked #29 of 30 in Serverless Platforms by our editors (6.7/10); pricing: Free plan; best for R users orchestrating serverless work across providers.
At a glance
- Editor score6.7 / 10
- PricingFree plan
- Best forR users orchestrating serverless work across providers
- Free planYes
- Paid fromFree
- Event triggersYes
- Facts checked23 Sep 2026
Where it wins
- Runs R functions as serverless cloud workloads.
- Defines and orchestrates workflows of serverless functions.
- Supports event-triggered execution on external FaaS providers.
Where it doesn't
- Focused on R rather than multiple programming languages.
- Requires users to deploy and operate it in their own environment.
- Support is centered on documentation.
Our verdict on FaaSr
FaaSr is an open-source framework for executing R functions as cloud workloads and coordinating them into serverless workflows. It is aimed at data-processing and scientific work that benefits from elastic, event-driven execution without directly managing servers. R users who want to orchestrate workloads across supported function-as-a-service environments are the clearest fit; teams seeking a hosted service or a general-purpose, multi-language platform should look elsewhere.
The defining capability is workflow orchestration around R functions: users can define workflows, then invoke workloads through event triggers, with execution delegated to external FaaS providers. That makes FaaSr an orchestration layer for R-focused serverless work rather than a hosted compute service. Its value depends on whether that language focus and provider-delegated execution match the workload; teams needing a broader runtime focus may find the scope too narrow.
FaaSr is open-source and self-managed, so deployment and operation remain with the user rather than being provided as a hosted commercial service. The project is available without a paid plan structure, but self-management also means the team must own its environment and operational responsibilities. Documentation is the listed support channel. Choose FaaSr when R workflow orchestration across FaaS providers and control over deployment matter; consider an alternative if you want managed hosting, broader language coverage, or support beyond documentation.
Your product? Our editors can test FaaSr in depth and publish a review, labelled as paid · from $149/mo →
FaaSr pricing
FaaSr fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Event triggers | Yes |
| Durable workflows | Not verified |
| Container workloads | Not verified |
| Edge deployment | Not verified |
| Max execution time | Not verified |
| Supported runtimes | R |
| Deployment | Self-hosted |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | faasr.io |
| Facts checked | 23 Sep 2026 |
Alternatives to FaaSr
- AWS LambdaA flexible AWS-native serverless runtime with usage-based pricing and broad event support.9.4
- Google Cloud RunA strong fit for containerized services that need scale-to-zero and Google Cloud integrations.9.3
- Azure FunctionsA capable Azure-native choice for Microsoft-stack serverless applications.9.2
Used FaaSr? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used FaaSr for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
FaaSr is listed in our Serverless Platforms directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/faasr/"><img src="https://www.itechguides.com/best/badge/faasr.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update