| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 0 | 1 |
| Spec score · Network Simulation Software | 7.5 (#19) | 7.9 (#11) |
| Configuration | Simulations are configured in a TOML file passed to the command-line program. | The emulator processes XML configuration files for platform, NEM, radio model, boundary, and radio error-rate or packet-completion curves. |
| Intended users | The site describes using Days to debug simulations, reproduce regressions across backends, and compare other simulators’ approximations against an exact reference. | The guide is for people using EMANE in wireless-communication-systems research and development and assumes familiarity with basic wireless concepts and the Linux command line. |
| License | The project is licensed under AGPL-3.0-only. | The guide says accompanying source code is released under the BSD 3-clause license; the guide itself is under Creative Commons Attribution 4.0 unless otherwise noted. |
| Purpose | Days is an exact discrete-event packet network simulator. | EMANE is an open-source distributed emulation framework for designing, developing, and testing simple and complex network architectures. |