AB Download Manager vs Hydra
AB Download Manager
abdownloadmanager.comHydra
github.comSide by side
| Figure | AB Download Manager | Hydra |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | Yes |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 1 |
| Spec score · Download Manager Software | 9.1 (#2) | 8.5 (#9) |
| API | A documented OpenAPI 3.0 service runs by default on localhost port 15151 and exposes download and queue operations. | The repository includes a JSON API specification in hydra-api.yaml and points users to Swagger Editor for exploration. |
| License | The project is published under the Apache-2.0 license. | Hydra is distributed under the GNU General Public License version 3. |
| Purpose | AB Download Manager is a free, fast, open-source download manager for seamless, organized downloads. | Hydra is a continuous integration service for Nix based projects. |
| What it does | AB Download Manager is a desktop and Android application for organizing and accelerating internet downloads. | Hydra is a continuous-integration service for projects based on Nix. |
Plans
In their own words
AB Download Manager
AB Download Manager is a free, open-source tool for organizing downloads. Its multi-threaded connections can increase download speed by up to 500%, according to the maker. Users can queue files for sequential downloading, schedule queues to start and stop automatically, and limit how much bandwidth the app uses. Browser integration supports Chrome, Firefox, Edge, Brave, Opera, and Vivaldi. For browser links to route through the manager, the desktop application must be running in the background. Listed platforms include Windows, macOS, Linux, Android, and iOS, with browser extension support also listed. The project uses the Apache-2.0 license, and the maker says it contains no ads and respects user privacy. The site provides tutorials, step-by-step guides, and documentation help. Release notes say API key authentication was added and the integration server was restricted to local connections. The Free plan is free. Video downloading and a portable version are listed; remote control is not.
Hydra
Hydra is a continuous integration service for projects based on Nix. It checks out project source periodically or continuously, builds it, runs tests, and produces reports. Work is organized into jobsets whose inputs can trigger builds when they change; jobsets can also depend on one another. Flake jobsets are supported when their outputs expose a hydraJobs attribute set. Jobs can produce packages, ISO images, or tarballs, and jobset inputs can use Git checkout sources. Hydra also provides a JSON API. It is aimed at Nix and NixOS package developers, not people who only need to use NixOS. Hydra is open source under GPL-3.0 and listed at free. It is self-hosted, with no hosted option listed, and running it is currently supported only on NixOS; the repository recommends the NixOS module for production. Flake evaluation is restricted from accessing files outside the Nix store. Some state is stored in the database, so backups are needed, and the wiki reports that hydra-queue-runner can sometimes leave queued builds unscheduled.