Best gaps Alternatives & Competitors in 2025

Readarr is a ebook collection manager for Usenet and BitTorrent users. It can monitor multiple RSS feeds for new books from your favorite authors and will interface with clients and indexers to grab, sort, and rename them.

Key Readarr features:

Automated Book Management Integration with Indexers Customizable Metadata Cross-Platform Support

Open Source

The python3 version of the automated Comic Book downloader (cbr/cbz) for use with various download clients.

Key mylar3 features:

Comic Management Automation Cross-platform Compatibility Active Development

Bazarr is a companion application to Sonarr and Radarr that manages and downloads subtitles based on your requirements.

Key Bazarr features:

Automation Integration Multi-Language Support User-Friendly Interface

Open Source

LazyLibrarian is a program to follow authors and grab metadata for all your digital reading needs.

Automatic Video Library Manager for TV Shows.

Key SickChill features:

User-Friendly Interface Extensive Show Support Automated Download Management Cross-Platform Compatibility

Open Source

nefarious is a web application that automatically downloads Movies and TV Shows.

Key Nefarious features:

Automated Media Download Integration with Media Servers Web-based Interface Cross-Platform Compatibility

Open Source

SickRage is a fork of SickBeard to automatically download TV shows from usenet or torrents.

Key SickRage features:

Automated TV Show Management Broad Compatibility Multi-Platform Support Post-Processing Features

A software for downloading and automatic matching subtitles to movies.

Key Qnapi features:

Open Source Subtitle Download Automation User-friendly Interface Integration with Popular Subtitle Services

Sick Beard is a PVR for newsgroup users (with limited torrent support).

Key Sick Beard features:

Automation Integration Library Management Customizable Notifications

A fork of Sonarr designed to work with Movies.

Key Radarr features:

Automation Integrations Customizable Community Support

Open Source

FlexGet is a multipurpose automation tool for all of your media.

Key FlexGet features:

Highly Customizable Wide Range of Plugins Support for Multiple Formats Cross-Platform Compatibility

Open Source

SubDownloader - Fast and Easy Subtitle Downloader.

Key SubDownloader features:

Ease of Use Wide Subtitle Database Batch Processing Multi-Language Support

Download perfectly matched subtitles for your movies and TV series, edit meta-data and convert...

Key Open Subtitles FlixTools features:

User-Friendly Interface Wide Language Support Batch Processing Seamless Integration