This page's audience our own tag's counts — open to see them

Period

–Visits

–Page views

–Clicks to vendors

–Time on page

–Reading now

Clicks to vendors, by tool

Top countries

Devices

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Fission

Free#22 of 32 in Serverless HostingServerless Development Frameworks Serverless Platforms

Fission: A Kubernetes-based framework for teams that want function triggers, autoscaling, and streaming. Ranked #22 of 32 in Serverless Hosting by our editors (7.3/10); pricing: Open source; best for teams running Kubernetes-native functions with streaming.

7.3/10Editor score

Visit Fission

Fission7.3 Visit Fission

At a glance

Editor score
7.3 / 10
Pricing
Open source
Best for
Teams running Kubernetes-native functions with streaming
Paid from
Free
Execution model
Request_based
Facts checked
19 Sep 2026

Where it wins
- Supports HTTP, timer, message-queue, and Kubernetes event triggers
- Streams responses over SSE, HTTP chunked transfer, or WebSocket
- Integrates with Prometheus, Fluentd, Istio, Redis, PostgreSQL, and etcd
Where it doesn't
- Requires teams to operate their own Kubernetes infrastructure
- Function and package deployment is CLI-based
- It is self-hosted rather than a vendor-operated hosting service

Our verdict on Fission

Fission brings serverless-style functions to teams that want to run them on Kubernetes infrastructure they control. Developers can write short-lived functions, package them in language-specific runtime environments, and expose them through HTTP or event triggers. It supports Python, Node.js, Go, Rust, C#, and PHP, with deployment through its CLI and declarative application specifications. Fission fits teams comfortable operating Kubernetes; teams seeking a vendor-operated function hosting service should look elsewhere.

The execution model covers more than HTTP requests: triggers include timers, message queues, and Kubernetes events. Fission provisions function pods automatically and scales them, while streaming responses are supported over SSE, HTTP chunked transfer, and WebSocket. External routes can use Ingress or Gateway API, and Prometheus and Fluentd integrations support observability workflows. These features make it relevant when event handling or streaming belongs alongside Kubernetes workloads, rather than in a separate hosted service.

Fission is open source and self-hosted, with support for local clusters, public clouds, and private data centers. Its ecosystem includes Kubernetes, Istio, Redis, PostgreSQL, and etcd. That flexibility comes with an operational trade-off: teams remain responsible for the Kubernetes environment and its care, rather than handing infrastructure operations to a hosting vendor. Choose Fission when Kubernetes control, multiple trigger types, and streaming matter; choose a vendor-operated platform if reducing cluster administration is the priority.

Your product? Our editors can test Fission in depth and publish a review, labelled as paid · from $149/mo →

Fission pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on fission.io

Fission fact sheet

Free plan	Not verified
Paid from	Free
Execution model	Request_based
Max execution time	Not verified
Deployment methods	Cli
Runtime languages	Python, Node.js, Go, Rust, C#, PHP
Custom domains	Yes
Preview deployments	Not verified
Deployment	Desktop, Self-hosted
Platforms	Linux, macOS, Windows
Integrations	7 integrations: Kubernetes, Prometheus, Fluentd, Istio, Redis, PostgreSQL …
Pricing	Open source
Website	fission.io
Facts checked	19 Sep 2026

Fission integrations

Fission lists 7 integrations on its own site.

Kubernetes
Prometheus
Fluentd
Istio
Redis
PostgreSQL
etcd

Alternatives to Fission

See all Fission alternatives →

Also Ranked In

Fission is ranked in 3 of our directories.

Used Fission? 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 Fission 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

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Title

Your review

0 characters · at least 80, up to 3,000

Pros (optional · one per line)

Cons (optional · one per line)

Your name (shown with your review)

Role (optional)

Company (optional)

How long have you used it?

I've used Fission myself and this is my honest opinion — nobody paid or asked me to write it.

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Fission is listed in our Serverless Hosting directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/fission/"><img src="https://www.itechguides.com/best/badge/fission.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 7 Oct 2026 · How we research and update