Live chat & messaging
Rooms, direct messages, presence, and typing — delivered in order at chat scale.
Power the live parts of your product — chat, notifications, presence, live data — with delivery you can count on. Run it on your own infrastructure, or let us host it for you.
Fan-out that scales to tens of millions of messages a second and millions of connections — with delivery guarantees that hold under load.
Throughput and connection figures are measured on a single capacity unit and scale linearly across the fleet — re-baseline on your hardware. 875,000 messages/second sustained from one node; delivery guarantees verified in fault drills (zero sequence forks).
Same platform, same guarantees. The only question is who runs the infrastructure.
Run NextSpark in your own Kubernetes cluster, alongside your other services.
We host, scale, and operate it for you, so your team ships features instead of running servers.
NextSpark is the connection and fan-out layer under whatever you are building.
Rooms, direct messages, presence, and typing — delivered in order at chat scale.
Stream metrics, prices, and events to thousands of viewers without polling.
Fan out moves and state to every player with low, predictable latency.
Ingest and broadcast device streams, with durable capture for replay.
Push activity, alerts, and updates the moment they happen.
Keep documents, boards, and cursors in sync across every session.
Ships as signed container images with a published Helm chart. Install it, prove delivery with the built-in test, and point your clients at it.
# deploy into your own cluster helm install nextspark oci://ghcr.io/xunholy/charts/nextspark # prove delivery end-to-end (subscribe → publish → receive) helm test nextspark --timeout 5m # your clients connect over standard WebSockets const ws = new WebSocket("wss://edge.your-domain.com");
Against the realtime services teams ask us about most. Honest about where they lead, too.
✓ yes ~ partial – no ◑ coming soon
Your data path, hardened by default — and entirely yours when you self-host.
Self-host and your message path never leaves your VPC. The only egress is a documented daily version check — off with one flag.
TLS 1.3 to clients, mutual TLS between services, and a zero-trust network policy.
Distroless, non-root images — signed, SBOM'd, and CVE-scanned in the release pipeline.
Self-host free for development; enterprise licensing (annual or capacity) is available today. Managed hosting is coming soon.
Self-hosting is available today. A fully managed service, where we run and scale NextSpark for you, is on the way — join the waitlist and we'll let you know when it's ready.
Those are good managed services with a global edge network. NextSpark gives you a choice: host it yourself to keep your data in-house and your costs predictable, or (soon) let us run it. Either way, messages arrive in order by default.
Onboarding, a direct support channel, and security patches on every plan. Subscription and perpetual add an SLA and an architecture review.
Yes. We'll help you run a proof of concept against your own workload before you commit to anything.
Tell us what you're building and how much traffic you expect. We'll help you figure out the right setup and what it would cost.