Top 10 Best Web Servers Software of 2026

OpenResty is built around the NGINX worker process model and keeps request execution inside the server, with Lua code running at well-defined phases like rewrite, access, and content. That design supports event-driven throughput for routing decisions, header normalization, authentication checks, and dynamic upstream selection. It also includes a rich ecosystem of NGINX modules and Lua libraries, which helps teams implement gateway features without introducing a second runtime.

A key tradeoff is that complex business logic grows into the server configuration and Lua codebase, which can slow reviews and increase operational risk when developers lack NGINX phase knowledge. OpenResty fits best when gateway-style behavior must be close to the network path, such as custom routing, request transformation, or lightweight authorization checks across many endpoints.

Envoy’s integration depth centers on xDS APIs that let an external control plane provision listeners, route tables, clusters, and endpoints, including staged rollouts using versioned configuration. The data plane enforces routing, TLS settings, and connection behavior at the proxy edge with extension points for filters and load-balancing behaviors. Operationally, it supports retries, timeouts, and circuit-breaking controls per route or per cluster, which enables predictable traffic shaping. This makes Envoy a strong fit for environments that already use a central configuration workflow for proxies.

A key tradeoff is that Envoy’s feature set depends heavily on the control-plane choice and the configuration discipline required to keep listeners and routes consistent. Teams also need to design extension usage and filter ordering carefully because filter chains affect request and response processing. Envoy fits best when workloads require consistent routing policy across many services, such as progressive delivery for microservices behind a shared ingress layer.

Apache Tomcat turns HTTP traffic into servlet container requests and maps requests to web applications using its application deployment model. It supports multiple connectors, including HTTP and HTTPS, and it manages request threads through a worker configuration that shapes concurrency and latency. It also handles WebSocket upgrades for servlet-based endpoints and exposes administration hooks through configuration files and log controls.

A key tradeoff is that Tomcat is not designed for edge routing, so health checks, TLS termination strategies, and URL rewriting typically sit in front of it. Tomcat fits teams running Java apps that need servlet and JSP compatibility and want predictable app-container behavior behind a load balancer.

Apache Traffic Server focuses on high-throughput HTTP forwarding with a configurable request pipeline that supports reverse-proxy and caching at the edge.

It provides fine-grained controls for connection handling, header and URL rewriting, and TLS behavior while staying compatible with standard HTTP clients.

Management is driven by a control plane style configuration model that separates runtime knobs from restart-heavy changes.

Its extensibility supports custom behavior through plugins and scripted configuration generation.

Eclipse Jetty runs as a Java-based web server and servlet container, commonly used for embedding web capabilities into applications. It provides an event-driven worker model with configurable thread pools and HTTP feature support for modern deployments.

Jetty exposes configuration through Java APIs and XML configuration files, which can be versioned alongside application code. It also supports TLS and WebSocket handling, making it practical for services that need tight control over HTTP behavior and protocol upgrades.

FrankenPHP is a web server for PHP workloads that pairs a worker process model with built-in static file serving. It runs PHP via its integration with the PHP runtime, so the server can accept HTTP traffic and hand requests to PHP with fewer moving parts than a separate reverse proxy plus upstream.

It also exposes configuration hooks for TLS termination, logging, and request handling, which helps operations teams standardize deployments. For teams already using PHP frameworks, it focuses on request routing, graceful restarts, and extension-friendly runtime behavior rather than generic HTTP proxy features.

Gunicorn is a Python WSGI application server that uses a worker process model instead of acting as a full reverse proxy. It runs your web framework code behind an HTTP frontend, so routing, TLS termination, and static file handling typically happen in NGINX or another proxy.

Configuration focuses on worker count, worker class choice, timeouts, and graceful restarts to keep deployments responsive. Through its Python interface and hooks, Gunicorn provides extensibility for lifecycle events and request handling behavior.

Oracle WebLogic Server is an application server that doubles as a production web entry point for Java-based services. It provides servlet and JSP handling, in-container TLS, and configurable HTTP worker behavior for backend request processing.

For enterprise deployments, it supports session clustering, built-in security integration, and management APIs for automated provisioning and governance. Compared with dedicated web servers, it trades lighter-weight static serving for tighter coupling between web requests and application runtime.

IBM WebSphere Liberty runs Java server applications and publishes HTTP endpoints from an integrated runtime rather than acting as a standalone origin server. It supports server-level configuration for virtual hosts, TLS, WebSocket handling, and HTTP behavior while keeping the deployment model tied to Liberty features.

Liberty also provides operational hooks for automation such as REST management APIs, health endpoints, and configurable logging outputs. For teams that already target the Liberty runtime, WebSphere Liberty can reduce reverse proxy complexity by serving dynamic and static content directly from the same application server layer.

Phusion Passenger is a web server integration that runs application code behind a reverse proxy-style deployment workflow, with focus on Ruby, Python, and Node app hosting. It manages worker processes for application instances and supports restart and application deployment without requiring an external process supervisor in most setups.

Configuration is centered on per-app settings that control start, stop, and runtime environment while front-end HTTP handling remains driven by the Passenger web integration layer. Teams that want fewer moving parts than a manual reverse proxy plus app-process setup typically get the most control where Passenger owns the app lifecycle.