| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Web Server Software | 8.1 (#7) | 7.6 (#18) |
| Installation | The installation guide lists pip, pipx, Docker, and system packages for Debian/Ubuntu, Fedora, and Arch Linux. | Source installation requires a C or C++ compiler, CMake, pkg-config, OpenSSL 1.0.2 or later, and zlib. |
| Purpose | Gunicorn is a Python WSGI HTTP server for running Python web applications. | H2O is an optimized HTTP server supporting HTTP/1.x, HTTP/2, and HTTP/3. |
| Security reporting | The community page asks users to report security vulnerabilities privately to [email protected]; only core developers subscribe to that list. | Security issues should be reported privately to [email protected]. |
| Support | The project provides GitHub issues and discussions plus a Libera.Chat channel, and notes that chat has no guaranteed watcher. | The FAQ directs users with problems to GitHub issues tagged as FAQ. |
