Software Alternatives, Accelerators & Startups

Caddy VS runc

Compare Caddy VS runc and see what are their differences

Caddy logo Caddy

The HTTP/2 Web Server with Automatic HTTPS

runc logo runc

CLI tool for spawning and running containers according to the OCI specification - opencontainers/runc
  • Caddy Landing page
    Landing page //
    2022-07-22
  • runc Landing page
    Landing page //
    2023-08-21

Caddy features and specs

  • Automatic HTTPS
    Caddy automatically handles HTTPS by obtaining and renewing certificates from Let's Encrypt, simplifying the process of securing web applications.
  • Ease of Configuration
    Caddy uses a straightforward configuration file (Caddyfile) that is easier to write and understand compared to other web servers like Nginx or Apache.
  • Cross-Platform
    Caddy is designed to run efficiently on virtually any platform, including Windows, macOS, Linux, and Docker, giving it great flexibility for deployment.
  • Built-in Reverse Proxy
    Caddy includes built-in support for reverse proxy functionality, which can easily be configured to distribute load among multiple servers.
  • Extensible
    Caddy supports plugins for additional features, allowing users to extend its functionality without compromising its core simplicity.
  • Integrated Logging and Metrics
    Caddy includes integrated logging and monitoring capabilities, which make it easier to maintain and debug the server without additional tools.
  • Active Community and Support
    Caddy has an active community and is well-supported with extensive documentation, which helps new users get up to speed quickly and troubleshoot issues effectively.

Possible disadvantages of Caddy

  • Memory Usage
    Caddy can have higher memory usage compared to other web servers like Nginx, which might be a concern for resource-constrained environments.
  • TLS Configuration Complexity
    While Caddy handles basic HTTPS automatically, advanced TLS configurations can be more complicated to manage and may require a deeper understanding.
  • Learning Curve for New Features
    As Caddy rapidly evolves and adds new features, there can be a learning curve associated with keeping up to date on the latest changes and functionalities.
  • Performance
    Although Caddy performs adequately for many use cases, it may not match the high performance of optimized setups with other web servers like Nginx in highly demanding environments.
  • Licensing Costs
    While Caddy is open source, certain features are available under a commercial license. Organizations may incur additional costs for enterprise-grade functionality.

runc features and specs

  • Standardization
    runc is part of the Open Containers Initiative (OCI), promoting standardization across container runtimes. This ensures interoperability and broad community support.
  • Lightweight
    As a lightweight and fast CLI tool, runc provides a minimal runtime for environments where resource efficiency is critical.
  • Security
    runc adheres to principles of secure software development and incorporates Linux kernel features like namespaces and cgroups to enhance security.
  • Broad Adoption
    As the reference implementation for OCI, runc is widely adopted and tested in production environments, ensuring reliability.
  • Flexibility
    runc offers the flexibility to handle low-level container configurations, making it suitable for advanced users needing granular control.

Possible disadvantages of runc

  • Complexity for Beginners
    The low-level nature of runc can be daunting for beginners who might prefer higher-level tools like Docker that abstract away complexities.
  • Minimalist Design
    While its simplicity is an advantage, runc lacks some of the advanced features and orchestration capabilities found in other container platforms.
  • Manual Configurations
    Users need to manually handle configurations, which can be error-prone and time-consuming compared to automated solutions.
  • Ecosystem Integration
    runc does not provide direct integration with tools and platforms by default, requiring additional setup for comprehensive ecosystem support.
  • Limited Features
    Compared to complete container platforms, runc offers fewer built-in features, requiring supplementary tools to achieve similar functionalities.

Analysis of Caddy

Overall verdict

  • Caddy is generally considered a good choice for developers looking for a hassle-free, secure, and modern web server. Its automatic HTTPS and easy configuration make it particularly appealing for small teams and developers who need to deploy web services quickly without diving deep into server setup complexities.

Why this product is good

  • Caddy, available at caddyserver.com, is praised for its ease of use, automatic HTTPS configuration, and modern design. It features an intuitive configuration system and comes with a built-in SSL/TLS to automatically manage HTTPS certificates using Let's Encrypt. Caddy is highly regarded for its simple deployment, minimal configuration, and the ability to serve static and dynamic content efficiently. It also supports HTTP/2 and QUIC protocols, making it a future-proof choice for web servers.

Recommended for

  • Small to medium-sized web developers who require quick and secure web server deployments.
  • Developers who prefer automatic HTTPS setups.
  • Projects that benefit from modern protocols like HTTP/2 and QUIC.
  • Users looking for a straightforward configuration process with minimal overhead.

Caddy videos

Getting started with Caddy the HTTPS Web Server from scratch

runc videos

2/21/19 RunC Vulnerability Gives Root Access on Container Systems| AT&T ThreatTraq

More videos:

Category Popularity

0-100% (relative to Caddy and runc)
Web Servers
89 89%
11% 11
Web And Application Servers
HTTP/2 Web Server
100 100%
0% 0
Load Balancer / Reverse Proxy

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Caddy and runc

Caddy Reviews

Self Hosting Like Its 2025
If you’re looking to forego fancy web interfaces and prefer editing a straightforward file while having the server manage everything from proxying to HTTPS via Let’s Encrypt, then this is the option for you. However, due to the absence of a web interface, I wouldn’t recommend it for complete beginners. But if you appreciate simple UNIX-based tooling, Caddy is an excellent...
Source: kiranet.org
Top Linux Web Servers: Pros and Cons
Now that we know their advantages and disadvantages, which web server is the best? The answer depends on your use case. Nginx is a very fast and powerful option, Apache is a great general-purpose web server, while LiteSpeed represents a premium alternative. Caddy works great if you need simplicity, while Lighthttpd works best when resources are low.
Source: bigstep.com

runc Reviews

We have no reviews of runc yet.
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Social recommendations and mentions

Based on our record, Caddy seems to be a lot more popular than runc. While we know about 263 links to Caddy, we've tracked only 11 mentions of runc. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Caddy mentions (263)

  • Ask HN: What Are You Working On? (July 2026)
    My wife and I continue to work on Uruky [1], a simpler Kagi alternative, based in the EU. Last month we reached 200 monthly active accounts (we’ve passed 250 now), and last week we launched support for XMR/Monero payments via ProxyStore [2]! You can also see in our homepage that more independent bloggers and privacy-minded people have written about us! The main differences between Uruky and Kagi, DuckDuckGo,... - Source: Hacker News / about 2 months ago
  • I got tired of setting up SSL for every side project, so I made a 60-second Docker deploy kit
    The secret is Caddy. Unlike Nginx, Caddy handles SSL automatically — it requests certificates from Let's Encrypt and renews them without any configuration. The entire reverse proxy config is 3 lines:. - Source: dev.to / 4 months ago
  • Docker basics: Using mkcert and caddy with docker compose to host web services over HTTPS for local development
    This tutorial walks you through setting up a simple Docker Compose project that serves two Node web servers over HTTPS using Caddy as a reverse proxy. You will learn how to use mkcert to generate wildcard certificates and the minimal configuration needed in the Caddyfile and docker-compose.yml to get it all working. - Source: dev.to / 5 months ago
  • Deploying Mercure alongside Caddy on a shared VPS
    Mercure is a real-time push protocol built on server-sent events (SSE). It ships as a standalone binary that embeds its own Caddy server. If you already run Caddy as your web server, you now have two Caddy processes fighting over ports. This post covers how to deploy both on the same VPS using Ansible, with solutions for every gotcha that came up. - Source: dev.to / 5 months ago
  • Caddy Has a Free API: The Web Server With Automatic HTTPS
    Caddy is a modern web server with automatic HTTPS. It obtains and renews TLS certificates from Let's Encrypt without any configuration. - Source: dev.to / 5 months ago
View more

runc mentions (11)

  • Setup multi node kubernetes cluster using kubeadm
    For kubeadm , kubetlet , kubectl should same version package in this lab I used v1.31 to have 1.31.7 References: Https://kubernetes.io/docs/reference/networking/ports-and-protocols/ Https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/ Https://github.com/opencontainers/runc/releases/... - Source: dev.to / over 1 year ago
  • Comparing 3 Docker container runtimes - Runc, gVisor and Kata Containers
    Previously I wrote about the multiple variants of Docker and also the dependencies behind the Docker daemon. One of the dependencies was the container runtime called runc. That is what creates the usual containers we are all familiar with. When you use Docker, this is the default runtime, which is understandable since it was started by Docker, Inc. - Source: dev.to / almost 2 years ago
  • You run containers, not dockers - Discussing Docker variants, components and versioning
    Now we have dockerd which uses containerd, but containerd will not create containers directly. It needs a runtime and the default runtime is runc, but that can be changed. Containerd actually doesn't have to know the parameters of the runtime. There is a shim process between containerd and runc, so containerd knows the parameters of the shim, and the shim knows the parameters of runc or other runtimes. - Source: dev.to / almost 2 years ago
  • US Cybersecurity: The Urgent Need for Memory Safety in Software Products
    It's interesting that, in light of things like this, you still see large software companies adding support for new components written in non-memory safe languages (e.g. C) As an example Red Hat OpenShift added support for crun(https://github.com/containers/crun), which is written in C as an alternative to runc, which is written in Go( - Source: Hacker News / almost 3 years ago
  • Why did the Krustlet project die?
    Yeah, runtimeClass lets you specify which CRI plugin you want based on what you have available. Here's an example from the containerd documentation - you could have one node that can run containers under standard runc, gvisor, kata containers, or WASM. Without runtimeClass, you'd need either some form of custom solution or four differently configured nodes to run those different runtimes. That's how krustlet did... Source: over 3 years ago
View more

What are some alternatives?

When comparing Caddy and runc, you can also consider the following products

Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996

Docker Hub - Docker Hub is a cloud-based registry service

nginx - A high performance free open source web server powering busiest sites on the Internet.

Apache Thrift - An interface definition language and communication protocol for creating cross-language services.

Nginx Proxy Manager - Docker container and built in Web Application for managing Nginx proxy hosts with a simple, powerful interface, providing free SSL support via Let's Encrypt

Podman - Simple debugging tool for pods and images