# KubeSail

Official pricing: https://kubesail.com  
Category: paas · Isolation: not published · DISCONTINUED

## Pricing regimes (raw)


## Features

Yes: ≥24 h sessions, self-hosting, open source, inbound access rules, firewall inside (nftables)

No: usage per sandbox (API)

Unknown: everything else. Evidence (source + quote) per feature: https://battleships.dev/data/providers/kubesail.json → feature_evidence

## Company

- Ownership: independent
- Stage: pre-seed [source](https://www.ycombinator.com/companies/kubesail)
- Accelerators: Y Combinator Summer 2019 [source](https://www.ycombinator.com/companies/kubesail)
- Total raised: unknown
- Last round: unknown (unknown)
- Investors: Y Combinator
- Revenue: unknown

KubeSail (YC S19, 'The Self-Hosting Company') shut down its hosted services in 2025/2026 after ~6 years; its own site now shows a farewell letter ('After six wonderful years, we've made the difficult decision to stop operating our hosted services... KubeSail is no longer accepting new users or selling hardware.'). Docs remain online for existing PiBox hardware owners; code remains open source on GitHub. The YC directory entry (website https://kubesail.com, batch Summer 2019, status Active) matches this provider's domain exactly, confirming the hint. No funding round beyond YC participation could be confirmed from public sources within the research budget.

## Caveats

- Discontinued or closed to new customers, confirmed on the live site 2026-09-29. The homepage says KubeSail operated from 2019–2025 and is no longer accepting new users or selling hardware. The docs remain online for existing PiBox owners. /pricing returns 404. No live tariff exists.
- Home self-hosting product; /pricing 404. Customer devices/clusters and hosted relay/control plane are different. No verified standalone cloud sandbox compute rate.
- Null values mean unknown, not free/unlimited. No model-token cost, tax or unverified ancillary charge included.
- Native browser/device/task/credit prices with unknown CPU/RAM are deliberately non-priceable. Check regime before interpreting any partial resource estimate.

## How this provider charges


YC: Summer 2019; directory status **Active**. Research scope: public-product-researched. Source: https://www.ycombinator.com/companies/kubesail

Kubernetes self-hosting platform

## Regime table

| Regime | When it applies | How billed | Numbers | Source |
|---|---|---|---|---|
| Native service | Hardware and complete resource tariff unverified. | resource; CPU alloc, memory alloc | Unknown or native-unit billing; see facts below | https://kubesail.com |
| Custom / unverified | Plan limits apply | Monthly fee; credits only as stated | fee=None; included usage=$None; concurrent=None; max session h=None | https://kubesail.com |
| Retained disk / GiB-month | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://kubesail.com |
| Snapshots / GiB-month | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://kubesail.com |
| Egress / GiB | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://kubesail.com |
| IPv4 / month | Lifecycle/scope must be checked | Native add-on | unverified, not $0 | https://kubesail.com |

## Verified billing facts and gotchas

1. Home self-hosting product; /pricing 404. Customer devices/clusters and hosted relay/control plane are different. No verified standalone cloud sandbox compute rate.

## Worked example

Requested: 4 vCPU/8 GiB, 50 simultaneous × 8 h/day × 22 days = **8,800 instance-hours**, 30% CPU; 50 GiB snapshots and 100 GiB egress. A month is 730 hours only when explicitly used in rate conversion.

**Total: unknown.** This product does not publish a verified complete 4-vCPU/8-GiB tariff and/or the service bills a different unit. Fifty concurrent instances and eight-hour sessions are not automatically supported. Neither 30% utilization nor retained snapshots can be converted into free resources. Use the native plan terms above and request the missing CPU/RAM, retention, egress and concurrency quote.

## Sources and coverage

- https://www.ycombinator.com/companies/kubesail
- https://kubesail.com/

Page captures and documentation indexes/bundles are in `raw/`; provider JSON lists the evidence paths. HN query results were captured separately as `<id>--hn.txt`; they are discovery leads, not current tariff authority. Downloaded docs do not imply every feature was verified; unsupported assertions remain null.