Silo
Silo: A focused, free Gradle cache server with strong administration and retention controls. Ranked #18 of 23 in Build Cache Software by our editors (7.3/10); pricing: Free plan; best for self-hosted Gradle cache administrators.
At a glance
- Editor score7.3 / 10
- PricingFree plan
- Best forSelf-hosted Gradle cache administrators
- Free planYes
- Paid fromFree
- Cache scopeRemote
- Facts checked21 Sep 2026
Where it wins
- Free, open-source remote cache with no account requirement
- Authentication, role mapping, retention limits, metrics, and health endpoints
- Docker and fat JAR distribution with a web administration dashboard
Where it doesn't
- Supports Gradle rather than multiple build systems
- Alpha software may not suit teams requiring mature tooling
- Self-hosting requires infrastructure and operational ownership
Our verdict on Silo
Silo is a self-hosted HTTP server implementing the Gradle build cache protocol. It is intended for teams that want to operate a remote build cache themselves without an account or paid subscription. The project supports Linux and web access, stores cached content on the filesystem, and is distributed as a multi-architecture Docker image or a fat JAR. Its focus is deliberately narrow: Gradle teams that need control over cache deployment and administration rather than a multi-build-system cache service.
Silo’s strongest area is cache management. Administrators can configure LRU eviction with TTL, byte, entry-count, and free-space limits, helping define how the filesystem-backed cache behaves as it grows. HTTP Basic and OIDC/Bearer authentication are available, with read-only and read-write role mapping for access control. Atomic content-addressed writes and SQLite metadata support the storage design, while Prometheus metrics, health endpoints, and JSON-structured logging provide operational visibility. A retro-terminal web administration dashboard adds a browser-based management surface.
The pricing model is straightforward: Silo is free and open source. There are no paid tiers to compare, while deployment remains the team’s responsibility through Docker or the fat JAR. The main trade-off is platform breadth. Gradle is the only supported integration and build system, so teams standardizing on other build tools should choose a broader alternative. Silo is also described as alpha software, which makes it a better fit for technically capable administrators comfortable operating a focused, self-hosted service than for organizations seeking a mature, managed cache product.
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Silo pricing
Silo fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Cache scope | Remote |
| Self-hosted option | Yes |
| Supported build systems | Gradle |
| Compiler/language support | Not verified |
| CI platform support | Not verified |
| Remote execution | Not verified |
| Open source | Yes |
| Deployment | Self-hosted |
| Platforms | Linux, Web |
| Support | Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 1 integrations: Gradle |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 21 Sep 2026 |
Silo integrations
Silo lists 1 integrations on its own site.
- Gradle
Alternatives to Silo
- 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
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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