# Apache Tomcat vs OpenResty

| Attribute | Apache Tomcat | OpenResty |
|---|---|---|
| **Vioscale score** | 45.9 (18% (low)) | 40.1 (25% (low)) |
| activity.commits_last_30d | 1 | - |
| adoption.github_stars | 194 | - |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A free, community-driven servlet container that executes Java-based web applications. Powers large-scale, mission-critical applications across industries. | An open-source extension to NGINX that lets developers write web applications and services using Lua, enabling non-blocking I/O operations with databases, caching systems, and other backend services, capable of handling thousands of concurrent connections. |
| integrations.count | 5 | 4 |
| integrations.list | `[{"name":"Apache HTTP Server (mod_jk)"},{"name":"Microsoft IIS (ISAPI redirector)"},{"name":"Jetty"},{"name":"JBoss"},{"name":"NSAPI redirector"}]` | `[{"name":"MySQL"},{"name":"PostgreSQL"},{"name":"Memcached"},{"name":"Redis"}]` |
| language.primary | Java | - |
| license.spdx | Apache-2.0 | - |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| pricing | `{"type":"open_source","plans":[{"free":true,"name":"Open Source","summary":"Free, open source","features":["Complete source code","All versions supported by community"],"description":"Full-featured servlet container available under the Apache License 2.0"}],"freeTier":true,"sourceUrl":"https://tomcat.apache.org","retrievedAt":"2026-08-19T22:46:44.328Z"}` | `{"type":"hybrid","freeTier":true,"sourceUrl":"https://openresty.org","retrievedAt":"2026-08-19T22:46:29.672Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | free | low |
| pricing.transparent | yes | - |
| security.disclosure_policy | yes | - |

## Capabilities (Web Servers)

| Capability | Apache Tomcat | OpenResty |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Automatic tls acme | - | - |
| Reverse proxy | - | - |
| Load balancing | - | - |
| Builtin caching | - | - |
| Concurrency model | - | - |
| Dynamic config discovery | - | - |
| Kubernetes ingress controller | - | - |
| Module extensibility | - | - |
| WAF support | - | - |
| Zero downtime reload | - | - |
| License model | - | - |
| Native app execution | - | - |

*Source: Vioscale. Generated 2026-09-01T17:02:10.325Z. "-" = undocumented, not absent.*