FosterStack
FosterStack: An open-source Gradle and Maven cache server with clear operational controls. Ranked #17 of 23 in Build Cache Software by our editors (7.4/10); pricing: Free plan; best for self-hosted Gradle and Maven cache operators.
At a glance
- Editor score7.4 / 10
- PricingFree plan
- Best forSelf-hosted Gradle and Maven cache operators
- Free planYes
- Paid from$49/mo
- Cache scopeRemote
- Facts checked21 Sep 2026
Where it wins
- Open-source MIT-licensed server with a free plan
- LRU eviction, metrics, health checks, and cache status dashboards
- Signed releases, SLSA provenance, and static deployment options
Where it doesn't
- Supports Gradle and Maven rather than broader build systems
- Does not provide remote execution
- Paid tiers are not yet built or shipped
Our verdict on FosterStack
FosterStack is a self-hosted remote build cache server for Gradle and Maven projects. It supports Gradle’s remote build cache HTTP protocol and Apache Maven Build Cache Extension remote HTTP mode, allowing teams to share build outputs across local development and CI environments. The core is open source under the MIT license, with Linux and macOS support. It is intended for teams that want to operate their own cache infrastructure rather than use a broader build platform or remote execution service.
Its technical scope is focused but practical. Size-capped LRU eviction helps control cache growth, while HTTP GET, PUT, and HEAD endpoints support the remote cache workflow. Optional HTTP Basic Authentication provides an access-control option, and Prometheus metrics, a health endpoint, and a read-only status page expose operational information such as cache hit rate and cache size. Grafana is listed as an integration. Static binaries and distroless container images suit deployments using Docker, Kubernetes, or systemd, while signed releases and SLSA provenance add release-verification signals.
The Free plan includes the full cache server, self-hosting, the MIT license, security patches, and release evidence. The published monthly plans list Team at $49 per month with multi-user access control, OIDC SSO, per-project usage analytics, and email support; Business at $199 per month adds high-availability replication, priority support, and a CVE-response target; Compliance is $499 per month billed annually and adds a FIPS 140-3 applicability statement, per-release attestation letters, security-questionnaire support, and named-version LTS. The vendor states that these paid tiers are not yet built or shipped. FosterStack fits operators seeking a focused, self-hosted Gradle and Maven cache; teams needing other build systems or remote execution should choose an alternative.
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FosterStack pricing
All 4 FosterStack plans and prices →
FosterStack fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $49/mo |
| Cache scope | Remote |
| Self-hosted option | Yes |
| Supported build systems | Gradle, Maven |
| Compiler/language support | Not verified |
| CI platform support | Not verified |
| Remote execution | No |
| Open source | Yes |
| Deployment | Self-hosted |
| Platforms | Linux, macOS |
| Support | Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: Gradle, Apache Maven, Prometheus, Grafana |
| Pricing | Free plan (source) |
| Website | fosterstack.com |
| Facts checked | 21 Sep 2026 |
FosterStack integrations
FosterStack lists 4 integrations on its own site.
- Gradle
- Apache Maven
- Prometheus
- Grafana
Alternatives to FosterStack
- NativeLinkA broad self-hosted platform for remote caching, execution, and distributed builds.9.4
- EngFlow Remote CachingA strong fit for Bazel-heavy teams that need remote caching and execution.9.2
- BuildFetch CacheA broad remote-cache platform with flexible deployment and a free open-source tier.9.0
See all FosterStack alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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